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Operator
Ladies and gentlemen, thank you for standing by. Welcome to the CACI International Fiscal 2023 Second Quarter Conference Call. Today's call is being recorded. (Operator Instructions)
At this time, I would like to turn the conference call over to Dan Leckburg, Senior Vice President of Investor Relations for CACI International. Please go ahead, sir.
Daniel Leckburg - SVP of IR
Well, thank you, and good morning, everyone. I'm Dan Leckburg, Senior Vice President of Investor Relations for CACI International. Thank you for joining us this morning. We are providing presentation slides, so let's move to Slide #2.
There will be statements in this call that do not address historical facts and as such, constitute forward-looking statements under current law. These statements reflect our views as of today and are subject to important factors that could cause our actual results to differ materially from anticipated.
Those factors are listed at the bottom of last night's press release and are described in the company's SEC filings. Our safe harbor statement is included on this exhibit and should be incorporated as part of any transcript of this call.
I would also like to point out that our presentation will include discussion of non-GAAP financial measures. These should not be considered in isolation or as a substitute for performance measures prepared in accordance with GAAP. Let's turn to Slide 3, please.
To open our discussion this morning, here is John Mengucci, President and Chief Executive Officer of CACI International. John?
John S. Mengucci - President, CEO & Director
Thanks, Dan, and good morning, everyone. Thank you for joining us to discuss our second quarter fiscal year '23 results. With me this morning is Jeff MacLauchlan, our Chief Financial Officer. Slide 4, please.
Last night, we released our second quarter results, and I'm very pleased with our performance. We grew revenue 11% with growth in both expertise and technology. Profitability was healthy with an adjusted EBITDA margin of 10.2%.
And we had another strong quarter of contract awards, winning about $3.5 billion, which represents a book-to-bill of 2.1x for the quarter, and 1.5x on a trailing 12-month basis. About 70% of our contract awards were for new business to CACI, and we had strong performance on our recompetes as well.
Overall, our execution in the second quarter and first half sets us up well to achieve our fiscal year guidance. Jeff will provide additional financial details shortly. Slide 5, please.
Turning to the external environment. Market and demand trends remain very constructive for CACI's business. On December 29, the President signed the omnibus appropriations bill, funding the government through September 2023. Budgets in general saw healthy increases, including defense spending, which increased about 10% from last year.
Below the top line numbers, we see healthy spending trends across both expertise and technology in key areas of focus for CACI, including C4ISR, cyber, digital solutions, enterprise IT and mission support. CACI's commitment to invest ahead of need drives differentiation and positions us extremely well to deliver innovation to our customers and value to our shareholders. Slide 6, please.
Let me update you on a key recent award. Last quarter, we announced the award of the Air Force Enterprise IT-as-a-Service contract, or EITaaS, demonstrating our leading position in IT modernization. This enterprise technology award was protested, and the Air Force subsequently undertook corrective action.
Late December, we were notified by the Air Force Base after corrective action, the awards for CACI was reaffirmed. We're very pleased by our customers' decision. Not surprisingly, that decision was protested again and now sits with GAL for resolution.
Our team is ready to go, and we look forward to beginning this important work for the Air Force, which we expect will be a positive driver of growth in fiscal '24. This award is a great example of our strategy to bid less and win more, focus on larger contracts and leverage our leading position in enterprise IT modernization.
Turning to second quarter awards, CACI won a sizable mission expertise contract to provide network and exploitation analysis in support of foreign intelligence and cybersecurity missions. As you know, our work and mission expertise engage as highly skilled employees who apply their technical and domain knowledge to support critical and complex agency missions.
The work on this program will incorporate CACI's deep, long-standing capabilities in both intelligence analysis and cyber. We won this competitive award and displaced the incumbent by leveraging our superior ability to understand and execute the mission. Thanks to our industry-leading talent. This award was also protested and the customers currently taking corrective action.
In the space domain, we continue to see strong demand trends and our Photonics business continues to grow in scale. As we've discussed before, we supply both government customers and defense primes with our photonics technology. In the second quarter, we received additional follow-on orders from the defense prime.
Our industry-leading photonics technology addresses the requirements of spacecraft operating in all ranges of space, low earth, medium earth and geostationary orbit and beyond.
CACI's optical communications technology is the only U.S.-based offering operating in the space today that meets DoD and intelligence customers stringent security and performance requirements. And we continue to invest in this technology to maintain our leading position as we see increasing demand for secure high-bandwidth communications across all domains.
I also want to highlight our strong recompete performance. In particular, our recompete wins of our best [background] investigation work for DCSA, an important cyber-related work for the intelligence community. Our recompete successes are driven by strong execution and the value we bring to customers.
All of these awards, new business and recompetes are for high-value and dirty work that addresses critical priorities for our customers and supports our ability to deliver long-term growth, margin expansion, strong cash flow and shareholder value. Slide 7, please.
As we have discussed before, we are committed to a flexible and opportunistic capital deployment strategy that includes internal investments, M&A, share repurchases, and other capital deployment options based on business and market dynamics.
This morning, we announced that our Board of Directors has authorized a $750 million share repurchase program, of which $250 million is expected to be executed imminently as accelerated share repurchase. With moderate leverage, ample borrowing [capability] capacity and confidence in generating strong future cash flow, we're in a good position to deploy capital to drive additional shareholder value.
In summary, we're pleased with our performance, and we remain confident in our long-term prospects. We are successfully executing our strategy, making the right investments, hiring and retaining top talent, winning new work, managing the business efficiently and leveraging our strong cash flow to deliver shareholder value.
With that, I'll turn the call over to Jeff.
Jeffrey D. MacLauchlan - Executive VP, CFO, & Treasurer
Thank you, John, and good morning, everyone. Please turn to Slide 8. As John mentioned, we're pleased with our second quarter results. We generated revenue of $1.6 billion in the quarter, representing year-over-year growth of 11%, including organic growth of 6.2%.
Expertise revenue grew 8% and technology grew 14%, which is well aligned with our view of the year. Adjusted EBITDA margin was 10.2% in the second quarter and 10.4% for the first half of the year. Our strong first half performance is on track with our full year guidance.
Second quarter adjusted diluted earnings per share were $4.28, reflecting the higher interest expense we discussed last quarter, partially offset by our higher operating profit. Slide 9, please.
Second quarter operating cash flow, excluding our accounts receivable purchase facility, was $22 million. This result reflects $93 million of unusual tax items we have previously discussed mainly the final repayment of $47 million of the deferred payroll taxes under the CARES Act, and a $46 million payment related to Section 174 of the Tax Cuts and Jobs Act of 2017.
We have previously disclosed the full year impact of $95 million from Section 174. This quarter's payment represents the half year effect on our quarterly tax payments. Cash flow also reflects the timing of ramping revenue recognized later in the second quarter and its attendant working capital.
We ended the quarter with net debt to trailing 12 months adjusted EBITDA at 2.2x. As we have previously discussed, the strong cash flow characteristics of our business, modest leverage and access to capital provides significant optionality to deploy capital in support of future growth and shareholder value.
To that end, we announced earlier this morning that our Board of Directors has authorized a $750 million share repurchase program. As John mentioned, we're in the final stages of deploying an initial $250 million of that authorization as an ASR. We expect to finalize and execute the ASR promptly and will provide you with additional details when we execute that repurchase agreement.
Beyond the ASR, we expect to deploy the remainder of the $750 million authorization in a manner based on business and market dynamics over time. This approach to capital deployment is a refinement of our strategy to be flexible and opportunistic in the management of our capital structure. We are now even better positioned to respond with agility to changing market conditions and investment alternatives. Slide 10, please.
We are reaffirming our fiscal year '23 guidance with the exception of free cash flow, which we are updating to include tax payments under Section 174. Let me also be clear that our guidance does not yet reflect any share repurchases under the authorization we announced this morning. We continue to expect revenue growth of between 4.5% and 7.5% with growth in both expertise and technology.
As a reminder, all of our recent acquisitions have now anniversaried, and so future growth in these areas will be organic. We continue to expect our full year adjusted EBITDA margin to be in the mid- to high 10% range, and we are reaffirming our prior adjusted net income and adjusted EPS guidance.
We are updating our fiscal year '23 cash flow guidance solely to reflect the previously disclosed $95 million cash tax payment related to Section 174, given no changes have been enacted.
Lastly, I want to reiterate that our guidance does not reflect any share repurchases under the $750 million authorization, we just announced. We expect to provide more information after we finalize the details of the $250 million ASR. Slide 11, please.
Turning to our forward indicators, CACI's prospects remain strong. We won $3.5 billion of contract awards during the quarter, driving our backlog growth of 10% compared to last year. Second quarter backlog includes roughly $1.5 billion from our intelligence customer mission expertise award, as well as roughly $1.2 billion from our DCSA background investigation recompete win. These reported amounts reflect current customer requirements.
For fiscal '23, we now expect 95% of our revenue to come from existing programs, with the remaining 5% split evenly between recompetes and new awards. We have $6.6 billion of submitted bids under evaluation, approximately 65% of which is for new business to CACI. This is down from the first quarter, primarily as a result of our strong second quarter contract awards. And we expect to submit another $15 billion in bids over the next 2 quarters, with over 75% of that being new business to CACI.
In summary, we're very pleased with our results, which demonstrate the successful execution of our strategy. Our team continues to perform well, and we remain confident in our ability to generate long-term growth and shareholder value.
And with that, I'll turn the call back over to John.
John S. Mengucci - President, CEO & Director
Thank you, Jeff. Let's go to Slide 12, please.
In closing, the second quarter and fiscal first half keep us well on track to deliver our full year guidance. I'm pleased with our continued growth, profitability, cash flow and contract awards.
Looking forward, we remain committed to delivering long-term growth and margin expansion, while compounding those returns with a flexible and opportunistic capital deployment strategy. All of this is driven by a commitment to grow free cash flow per share over the long-term.
As is always the case, our success is driven by our employees' talent, innovation and commitment to everyone on the CACI team, I'm extremely proud of what you do each and every day for our company and for our nation. And to our shareholders, I thank you for your continued support for CACI.
With that, Emily, let's open the call for questions.
Operator
We will now begin the question-answer session. (Operator Instructions) The first question today comes from Robert Spingarn with Melius Research.
Robert Michael Spingarn - MD
Nice numbers and congrats on your -- bought your reauthorization in ASR. John, I don't know if this question is for you or Jeff. But Jeff has talked about the opportunity set that's out there in the pipeline. What kind of book-to-bill should we anticipate after strong first half here in the second half, especially with this budget rising?
John S. Mengucci - President, CEO & Director
Yes, Rob, thanks. Look, we're extremely happy with our -- with the book-to-bill that we posted. We've also been able to boost the trailing 12 months number, I think, to 1.55x. $13 billion, $15 billion of additional bids in the pipeline. I like our new business win rates. Very proud of our recompete rates that year-over-year continuing to stay above a 90% capture rate.
What I'll use as evidence of us continuing to execute, I guess, I would say, memory management, right, around how we do business development. We've been on a long-term path of this big lesson win and win more, and drive duration of programs in our pipeline longer and longer because to me, at the end of the day, I want predictable long-term growth, right?
So we've got some nice bids in the pipeline. I like the way that the EITaaS Air Force Award is trending. I'm very proud of the team for an extremely well laid out competitive incumbent takeaway in the intelligence community.
And on the DCSA award, that is a driver of both revenue and margins. And that comes not only with some recompete volume, it also comes with some new business volume as our government customer reduce the number of people providing that service from 3 folks to 2.
So I would tell you, to me, on the new business front, everything is in position. We don't get to win and win them all. But we are very focused on making sure we're bidding the right work, and the right work involves looking at a top and bottom line growth, right? We've got to sort of keep this mix up, whether it's expertise or tech.
Growth in both of those segments, as I've always said, people tell me all the time, you must be happy with that high tech segment growth because it exceeds where the expertise one is. And I consistently say, I want both of them to grow. I think we're sort of getting ourselves to that point.
Robert Michael Spingarn - MD
Just in that vein, do you see equal budget support for defense hardware and services, especially now that you're in both?
John S. Mengucci - President, CEO & Director
Yes, Rob. Look, I think that this, the recent '23 budget, first of all, it's constructive that was passed without a long-term CR. It does support very key areas of where CACI is focused.
If I look forward, I don't want to go too far -- too much further than electronic warfare, to get in cyber and sort of where those 3 areas go. We're beginning to become a heavier player in the space domain. I think those are decade-long budget growth areas.
So we've gotten ourselves strategically, not by accident, into those deeper rivers, longer flowing streams of funding. And that makes us a very different company going forward. A lot of small left and right turns that is really, I believe, positioned us well, so that just about any budget environment, we're a national security company enrolls a dangerous place. And I'm very pleased so far with the budgets.
Robert Michael Spingarn - MD
And I apologize, I don't want to overstay, but I want to ask Jeff for a clarification. John, you talked about technology versus expertise. And technology mix is up in the first half, yet the margins for the first half are going to be lower than the second half. So Jeff, if you could just explain that dynamic and what changes in H2?
Jeffrey D. MacLauchlan - Executive VP, CFO, & Treasurer
Sure, Rob. The mix operates in 2 dimensions. And I think oftentimes, people kind of here fixed price and they think higher margin and they hear cost plus and they think lower margin. And that's really not always the case.
We have plenty of higher-margin cost type work, and we have some important fixed price work that's also a slightly lower margin, reflecting a lot of real business factors, risk and whatnot. It's still good work for us, but it doesn't necessarily have the same margin.
And so there are some lower margin fixed price sales in the second quarter that you see reflected in that mix.
Operator
Our next question today comes from Peter Arment with Baird.
Peter J. Arment - Senior Research Analyst
Maybe just test based. First, a clarification, just is there a deadline date on the GEO when we see a resolution on the Air Force contract?
And then just as a second question. Photonics obviously has been a huge focus for you and awards that continue to pick up. How does the runway look regarding scale? I know you just mentioned space is going to continue to be big.
John S. Mengucci - President, CEO & Director
Yes, Peter, thanks. Let me try to unpack that. First off, on the Air Force contract.
Look, we're very, very pleased. As my prepared remarks mentioned, the protesters were unsuccessful. We were successful at holding on to that award. We have a lot of confidence in the Air Force. I've seen this through with us. We're ready to go. We are very well staffed and already have had discussions with our customers.
So we would expect this will be ramped up in the April timeframe, Peter. Will not -- it is not planned to be a large contributor of revenue in FY '23, but we clearly would expect, as we get things ramped up and started up, to see this deliver in FY '24.
On the space front, where we are with our optical comms business. Look, we're -- I'm very happy with where we're at. I've been very transparent picking up the Photonics business of LGS and combining that with the SA Photonics business really is the best example of putting, I guess, peanut butter with chocolate.
I really like what -- that's going to deliver to us. We're going to continue to invest in it. So you're going to -- you all are going to continue to see us investing in that area. That's a good decade long nice growth business for us at better-than-average margins. I think we're on the right path to get on to that on ramp at the right time.
We're really working on expanding into -- already into future related markets that are going to include some airborne systems, potted and none, and they're really working on pulling the synergies together between our LGS and our SA Photonics business. Pete, you have 1 other question on that, and I didn't catch it.
Jeffrey D. MacLauchlan - Executive VP, CFO, & Treasurer
Contract space.
Peter J. Arment - Senior Research Analyst
I think I remembered Air Force contract.
Jeffrey D. MacLauchlan - Executive VP, CFO, & Treasurer
Thanks, Peter.
Operator
Our next question comes from Matt Akers with Wells Fargo.
Matthew Carl Akers - Senior Equity Analyst
I wanted to ask about kind of capital structure and your target leverage. You've been running kind of 2, 3x last several years, but interest rates were very low. Does that change at all given that where rates are now, and you think about the mix of kind of variable rate debt any differently now?
John S. Mengucci - President, CEO & Director
Yes, Matt, I'll start off, and I'll turn it over to Jeff. For a long, long time, we've been talking about we are comfortable and everything up to a 4.5 range, maybe temporarily getting a little bit higher than that to do something that was very transformational.
What I like about where we are now leveraged somewhere in the low 2s. But I want to tie it to opportunistic and flexible. If we deploy the full $750 million of the combined ASR and open margin repurchase, that's going to still leave us around 3x. It really leads us -- leaves us considerable capacity for other options. And to me, that's the kind of flexibility and optionality we were looking for. So Jeff?
Jeffrey D. MacLauchlan - Executive VP, CFO, & Treasurer
Yes, just to add a little bit to what John just said, you guys are probably tired of hearing flexible and opportunistic, but that really is what this is. We're in a really nice spot here to operate the company in the near-term in kind of the mid-2s, which gives us a good chance to mid-2s to 3, so it gives us a good chance to have plenty of options as we approach either organic investment or acquisitions.
We really are in a nice spot with lots of options, which is just exactly where we like to be.
Matthew Carl Akers - Senior Equity Analyst
Got it. And then if I could do 1 more, I guess. On M&A, it's been slower than you sort of have done historically. Could you talk to us about what are sort of the hurdle rates you're looking at? And where are some of those deals falling short? Is it just valuation? Or just not the right assets out there that are the right fit for CACI?
John S. Mengucci - President, CEO & Director
Yes, there are a few observations we've made here. The pipeline is not necessarily any smaller. I think we're starting to see some valuation rethinking as the market sort of adjust to the current circumstances. I imagine a lot of that is interest rate driven or some amount of it is interest rate driven. But we remain very active lookers, and we're going to continue our practice of being very thoughtful and deliberate and strategic.
And when the right -- that's the other part of this optionality, right? When the right opportunity presents itself, and the right fit at the right time, we're poised to move with some speed.
Operator
Our next question comes from Bert Subin with Stifel.
Bert William Subin - Associate
So just a follow-up on the earlier question. If I think about it maybe on a near-term basis, the DoD's O&M budget is expected to grow high single digits, RDT&E expected to grow even faster than that, but your organic guidance is still for low to mid-single digits in fiscal '23.
Even if we factor out your Army exposure, at least from our seat, it seems like higher budgets and easing labor would yield more opportunity just relative to what your view was last summer. Is there a reason that's not the case?
John S. Mengucci - President, CEO & Director
Yes, Bert, thanks. Look, let me start off with saying that we're really happy with our first half performance. I mean 5% organic, 10.4% adjusted EBITDA margin. So I like how that sets us up well going forward.
We've said in the past, we've got a large, growing addressable market. So there's plenty of opportunities for a $6.5 billion CACI. I like strong awards that Rob highlighted there, or we got a nice pipeline.
Back on guidance, look, it reflects a lot of different assumptions and scenarios in terms of how a multitude of factors are going to play out. And that's why we provided a range at the beginning of the year to put a little color on what goes on here when we look at, do we hold our guidance, what we had a strong first half, do we narrow guidance, do we raise it?
We mentioned things like new award timing, facility and customer access, COVID exposures and the FY '23 budget is positive. Those are all trending more positive than what we would have seen back in the July, August timeframe.
Cost of labor, contract expansions, sort of a little unchanged to negative, a little bit of pressure on margins, if you look at continuing to retain current employees and hire new ones, and then the whole contract officer resources. Those are about the same.
So we've got some things that move us closer to the right Gold Coast and there's some things that keep us somewhere along the left one. So we're just trying to balance risk and option.
We could probably throw in some of the '20, '24 commentary and does that flow back onto '23. So we're very comfortable with the guidance that we have out there. We're very strong and well positioned to land within that guidance, and we'll be able to potentially make different moves and different commentary when we get to the end of our third quarter.
Bert William Subin - Associate
Okay. That's super helpful. Maybe just as a follow-up to that.
If we look at that guidance, it implies a pretty healthy step-up in the second half from 428 in earnings in 2Q to something north of 450 per quarter, I guess, based on the cadence in the back half. Can you just walk us through what changes?
And to your comments there on '24, are you starting to contemplate anything, like a potential government shutdown or you hearing anything like that? Just any commentary around what steps up in the back half and what those risks are?
Jeffrey D. MacLauchlan - Executive VP, CFO, & Treasurer
Yes. I think I'll -- maybe I'll start that off and then let John address the second part of your question.
The mix phenomenon that I alluded to a few minutes ago, a few questions ago, extends really nicely into your question here about the back half. And we see a growing fixed-price content, but we see some of that margin mix that I alluded to earlier, changing in a way that's favorable to margin.
You can see a little bit of that, if you look at our cash usage and a little bit of inventory growth, you can see sort of the front end of that starting to happen. And in my prepared remarks, I referred to that when I talked about ramping revenue at the end of the second quarter and that attended working capital growth.
So we're starting to see the front end of exactly what we expected to see in the second half. And again, at the risk of repeating myself, it's really lining up nicely with -- right where we expect it to be at this point in the year.
John S. Mengucci - President, CEO & Director
Jeff, thanks. And Bert, you brought up a little bit about government fiscal year 2024. Look, we're hearing the same, I guess I'll choose my word wisely. I'll call it commentary. I've been asked noise, rhetoric.
But look, there's always a lot of noise and there's always a lot of headlines. We were a 60-year-old company. We've been through many environments, administrations, a bunch of cycles. We've heard a lot of commentary and fluff political on this over time.
Look, in all fairness, on one side, you have legitimate concerns about the government's deficit and debt situations and therefore, talk about budget cuts in government fiscal year '24.
On the other side, there remains significant bipartisan support to fund defense and national security, just given the geopolitical environment and threats. So there's a war in Europe, there's near peer threats like China who has surpassed us in some ways. Cyber is the grade equalizer, whether that's Iran or North Korea.
A decade plus ago, we were at war in Afghanistan. Very germane to us. We operate in the skies in electromagnetic spectrum and all the means pretty much unencumbered. And that's most likely not going to be the case in any type of near-peer conflict. And we're relying much more heavily on space, and that domain is now contested.
So if I had it right, the pluses and the minuses, look, we're going to continue to monitor it. But to some extent, I'm a guy and we're a company that we're going to work on things that we can influence for now. We're going to focus on running the business, delivering long-term growth and shareholder value.
And what we know is national security is extremely important, and they have a lot of critical needs. We know our expertise and technology can address many of those needs. We're a strategically based company strategy is where we come from. We're not in these high-growing very important markets by accident.
So I like the fact we have a full government fiscal year '23 budget that supports where we want to head is, we're going to continue to focus on long-term strategy that delivers consistent value no matter what that commentary happens to be. But thank you, Bert, for that question.
Operator
Our next question comes from Seth Seifman with JPMorgan.
Seth Michael Seifman - Senior Equity Research Analyst
So I guess, I think it was a few quarters ago, maybe it was around the middle of 2022 when there was some of the slowness in government funding. And I think you talked a little bit, John, about being unsure kind of in terms of figuring out, what might be delayed versus what might be lost?
And I wonder if kind of maybe 6 months on or so, if you've gotten a better sense of that. And particularly, maybe on the product side, since it seemed like that was an area where maybe there was some more dislocation in terms of what we expected?
John S. Mengucci - President, CEO & Director
Yes, Seth, thanks. Yes, so I'll start off. As Jeff mentioned, the year is playing out as we expected. And some of the mission tech work that we have out there is -- we clearly plan to deliver during the back half of the year.
Look, back to where we were, and you're absolutely right, second half of fiscal year '22, we were looking at funding slowdown in dips and the like. And look, some has come back, and some has and will come back in a slightly different forms.
So the update to that is while funding was the original issue and while the customers struggled through funding, some of the threats and the requirements changed. It's requiring to enhance capabilities versus what we all may have delivered just about 1-year ago now.
Now for us, software defined everything. What that means for us is we're working on software mods to our hardware solutions, looking to deliver those items that haven't yet come back by the end of our fiscal year, and that does drive the stronger bottom line.
It's something that we continue to watch, but it does unnaturally set play into this concept of software-defined low size, weight and power, multi-mission tech that can really take out different, different needs.
If we look at what's going on in the Ukraine, there's a lot of UAS activity there. And even those requirements continue to change as the pace of battle changes. So the fact that we want to push all those mission tech sales out through the end of the year is a great kudos to our earlier acquisitions and that they were very software defined.
So we'll be able to get back on track, very confident in that, and we'll need that, of course, for us to close on our fiscal year '23. So thank you for that.
Seth Michael Seifman - Senior Equity Research Analyst
Great. And then maybe as a follow-up for either of you. And I know you guys aren't responsible for all the stuff that we analysts throw into our models. But if I look at the consensus for next year, it looks like people are thinking about kind of a 10.9% EBITDA margin, something close to 11%.
Do you think that there -- maybe there's still some anchoring around with the idea of ever-expanding margins and stuff that might be where things in this environment that we're in now, this operating environment, where things might take a little longer to deliver on that or be a little bit tougher and maybe expectations need to be a little bit more in check for now?
John S. Mengucci - President, CEO & Director
Yes. I think what I'll say to that is we're 186 days and too hard 1-year. We've got another 180-something days left. We're going to focus on making sure we button up FY '23 to our guidance and to a level that our shareholders have come to enjoy.
Look, on the margin side, long-term is what I would stress to everybody on the call. We were an 8%-ish EBITDA margin business 6, 7 years back. It's great to be having the discussions of mid- to high 10s.
And then where that cap is, the way we see them internally is look, we are getting into higher and higher, greater and greater funding streams. It's how we move from 8 to mid- to high 10s, frankly, right? It's really strategically taking a look at the book of business we have and not resting on where we've been, but looking at where the trend lines are going to be.
And the fact that there was going to be greater spend in some areas that we had no involvement. So 4, 5 years ago, 6 years ago, getting ourselves involved more into the national security side, getting us more into space, gives us much better chances in continuing to drive margins than we would have been with our, let's say, fiscal year '17 portfolio.
So I'm going to shy away from crystal ball in FY '24. I really want to focus on this year and finish strong, get the share buyback, execute it, look for places where we still think we're not highly valued enough, and so to take some opportunistic stabs at taking some additional shares out and really trying to position us well for our guidance call that comes along in August of '23. So thanks so much, Seth.
Operator
Our next question comes from Mariana Perez Mora with Bank of America.
Mariana Perez Mora - Research Analyst
So my first question is a follow-up on the commentary, the political commentary about next year, continue resolution or probability about that.
Have you seen any impact in your customer behavior from this increased uncertainty? Have you seen that like commentary actually impacting award environment, spending environment?
John S. Mengucci - President, CEO & Director
Yes, Mariana. Thank you. Well, look, I -- nothing around FY '24, right? I think right now, as I shared earlier, from where I sit, a public company CEO, national security space, it's sort of an unbalanced scale between -- I'd like what the station is for to do going forward. And I would say, there's a higher probability that there are supportive FY '24 budgets.
If you look at FY '20 and '23, look, we have a fully approved, signed off and appropriate government fiscal year 2020, '23 budget. So with our customers, there's much more certainty. In my senior level meetings, there's much more certainty around how they're going to push funding out. We still have this contracting officer thing. And everybody in the federal government sees that, and they're all working on that. That's going to take some time to get fully corrected.
But I see a much more positive environment with a customer set that we're supporting. Everything we're doing in the EW, SIGINT in cyber and how that begins to converge, what we're doing in commercial solutions for classify with our IT tech acquisition where we're seeing in the space. But those are all highly funded areas that are absolutely must dos within where we had.
And on the IT modernization side, we've won some nice size contracts there. We have to get through some of this protest period. But yes, I have not picked up any concerns, Mariana, around funding. Where we go in FY '24, we're all going to have to watch. I hear the same things you all here. Could we have a full year CR? Perhaps. But we're in some pretty important areas, I believe. We'll still continue to see the requisite funding.
Mariana Perez Mora - Research Analyst
And then you mentioned these recent wins. You have recently won significantly large multimillion-dollar wins. How is your appetite to pull through those kind of like larger contracts, like in the pipeline of submitted bids, or the bids that you expect to submit in the near-term? How much of that is multibillion-dollar contracts?
John S. Mengucci - President, CEO & Director
Yes. Look, we've been on a long-term strategy here of bidding larger jobs. And for a company like ours, we have to contrast that against winning a lot of work that gets you a nice revenue pot doesn't do much with margins. And if you find yourself in that gray area, where you're bidding programs with tighter and tighter rates.
The reward for that, trust me, is you get to recompete on that network even sooner. So it's why we've been very strategically focused on duration of contracts in our backlog, which is now around 4, 4.5 years.
Yes, it does mean that awards are lumpy. It does mean that there's a much larger price on winning. Some of those larger ones because you're not chasing these really, really small ones, they can sort of fill that in.
I think we've got the right -- I think we have not dialed right, Mariana, and that we're out there winning some nice [C] core wins. But we're also in these multibillion-dollar ones that frankly provide a nice floor and a nice space. So we can be, again, "more predictable long-term growth."
So yes, we have the appetite for it. We've got an outstanding business development team and outstanding sales support team. We've been building it over the last decade. So we're going to stay with that strategy because once you win something like that, not only do you deliver the long-term tech tail, but then you get into the all and then with those programs and then lose us into really nicely positioned expertise work. So thank you for those questions.
Operator
Our next question comes from Sheila Kahyaoglu with Jefferies.
Sheila Karin Kahyaoglu - Equity Analyst
I feel like you have a good setup with longer-term contracts. But on your organic growth in the first half, you performed pretty well, up 5% organically. And just the full year guidance implies some slowdown. So maybe can you talk about that a little bit more. You touched on it?
And then specifically, I know your contract wins are being held up, including EITaaS. But can you talk about what your assumptions are around EITaaS, [DCSA] and the IC win? What sort of assumptions do you have for those starting to ramp?
John S. Mengucci - President, CEO & Director
Yes, sure. I would say, on the organic front. Yes, look, I'm very happy we had 11% overall growth and 6% in the second quarter. And your numbers are -- as, always, are spot on, 5% of our organic growth for the first half.
Look, that is really playing out because of previous large awards that we've been able to book, get to the protest period. And then every one of these larger tech jobs has a slightly different ramp-up plan. So those are starting to all get into alignment.
On top of that, the mission technology work, we've been very transparent on that. Rarely so does that make it deeply into our backlog, where usually getting award is a 30- to 60-day delivery cycle. So we sort of get that award and that immediately goes to revenue and then better our profits. I know Jeff touched on that. Looking towards our second half.
So I like the book of business we have today, and I'll sort of move forward to the ones that we just won. Look, we're extremely pleased with what we have won there. It's -- they are 2 really nice jobs that those and a few others are going to set us up well.
Look, on the award side, you've always heard me say awards are lumpy, right? You'll never see me post any kind of headline record award quarter because I fear coming to you all, showing you that the quarter after that -- it was slightly less.
So look, awards are always going to be lumpy. But we do continue to win new work and execute against our large and growing backlog.
On the EITaaS, look, I think we'll know in the April timeframe. I don't like to go to my crystal ball. But I see more upside than downside to that decision, Sheila. I really see that being the next step up for us as we look at how we're going to solve for FY '24 or organic growth.
The other cyber-related IC award, if everybody out there, we're going to continually call it that because it is a very sensitive program. On behalf of our customer set, we're not going to discuss the program name or the -- or our direct customer.
I can tell you that, that is in a protest period. We're waiting for the customer to take corrective action. We're hopeful we may hear something before this month is out.
But as I mentioned on the Air Force job, when we go to these large awards, we're always planning a 90- to 120-day protest period, so we know when we can count on revenue from that job. So we don't peak too early.
So I do like what we've done there. Those are really strong, strategic wins. We had the right best value solution in both cases. We continually shape these awards from 2, 3, 4 years before anybody else sees them. And again, we're leading with investment ahead of customer need. Both of these awards will benefit. We'll talk more about it as we get through the protest period, that investing ahead of contract award is showing these customers the art of the possible.
Okay, here's where the threats are going to go, do you want a more technological solution. It really takes the risk of having to find 2,000, 3,000 cleared folks. How can we bring technology more in to sort of lower their risk?
So all in all, I like how '24 is setting up, and I do believe that we'll find our way through these protests.
Operator
Our next question comes from Tobey Sommer with Truist Securities.
Tobey O'Brien Sommer - MD
You mentioned your addressable market increasing substantially. How does the spending growth that the company can tap into compare and perhaps differ from the headline rates of growth of this year's budget?
John S. Mengucci - President, CEO & Director
Yes. So if I remember right, Tobey, there's been talk around it's a 10% growth budget. We can throw inflation in that, then we have to take out things, so we don't do. We're always looking at that 5-year CAGR budget, and I think we've called that growth between 22% and 27%, somewhere in the 3% range.
Overall budgets in '23, some are going to grow faster in any given year. But the work that we've done says this is at least a 3% go-to-market all through '27. What I like is we have a total addressable market of $260 billion or $6.5 billion company.
That total addressable market, how I measure it is if we hadn't done the acquisitions, if we hadn't been strategically focused, if we hadn't gotten ourselves into these funding stream, if we had done no acquisitions at all, there are some in this marketplace that don't do any, that we would not have positioned ourselves well and we've been able to drive additional shareholder value.
So look, strategy is a place where we come from. We're not here by accident. $260 billion addressable market is almost 2x what it was in 2012. So all I can tell you from a macro level, budgets are holding up well enough for us to continue to grow, and we like what the future holds.
Tobey O'Brien Sommer - MD
Is there anything you or the industry can do to affect change in terms of the chronic and burden some of the protests that kind of plagued the industry and procurement environment? Just wondering, if you see the possibility for change.
John S. Mengucci - President, CEO & Director
Yes. Tobey, I've been in this market a long time. This is almost 40 years now. Look, the funder government provides the protest path for, and I will say, for good reason, right? There's days we're happy for that process and the days are not, right? Depends on whether I'm on the left side versus the right.
So look, it would be more helpful to us, clearly, if we could come to you all that we win this job in the next 5 days, we're going to see pops in revenue and the margins, but just not the market we're in.
So the best we can do, as you've heard me say many times, as we control what we can control and we work on, that is when we win jobs like EITaaS and it gets announced in the -- in our first quarter, right?
We pretty much have to recognize that it may be early fourth quarter before we can recognize revenue, and that's up a lot of other factors stay stable, right? But on the flip side of that doing business with the federal government, they're a well-paying customer, right?
I'm not worried about whether 40 million people quit on this path. We know when national security needs are. We can be much more strategically focused. And I would say the protest process is just something we have to work through. We have to be reasonable on it.
And at the end of the day, you all in our shareholders of the extremely patience that these things eventually work themselves out, and we all had to move to move forward.
Operator
Our next question comes from Louie DiPalma with William Blair.
Michael Louie DiPalma - Analyst
As a follow-up, John, to your reply to Seth's question, Ukraine has employed a wide range of systems to counter UAS and loitering munitions. Are SkyTracker orders expected to ramp in the future as you develop the software modifications that you referenced?
John S. Mengucci - President, CEO & Director
Yes. So let's talk about a little bit about what we're seeing in Ukraine. And I would -- I don't have to warn everybody there that what we all see is about in April, what's actually going on there.
Look, we have -- we are very deep in cutting UAS and EW as many of you know. And there's going to be a lot of technology capabilities that are going to be relevant and are already relevant in the Ukraine fight. There's also avenues for some of our intel analysts, our training and operational support and our logistics folks in mission expertise issues.
Look, I think issues in the Ukraine are going to be there for quite a long time. All the supplementals are rightly related as 2-year money. But on the other side of that, Louie, is the federal government makes a decision is what we can export.
We're hearing and seeing what you're all hearing and seeing, allies around the globe. They're all talking about expanding their defense budgets. Just as much as looking at what's going on in the Ukraine, we're already delivering some of our technology to the 5 ICE countries. We're going to look across our Eastern European allies. They're increasingly interested in our counter UAS methods and systems, Louie, as you mentioned, far beyond the SkyTracker line.
And as they increase defense spending, we're going to be involved in those discussions. We're already out there understanding what their requirements are. It's still too early to discuss specifics. But look, it's another potential market for us. Every time we can do things to grow our total addressable market, better returns come up in the future.
So yes, our SkyTracker line, our Korean line, some of our beam and B systems that are more manpack level solutions that do counter UAS up to and including -- moving from kinetic mitigation versus non-kinetic is what we're looking at next. So I think we've got a long potential growth line there.
Michael Louie DiPalma - Analyst
Great. And it appears as though your work with the Air Force's enterprise IT as a service program is close to moving forward, you said potentially April.
Are you also in contention potentially for the Wave 2 and the Wave 3 associated with that program? You obviously won Wave 1, but there's 2 other ones that are probably big. And does having Wave 1 put you at an advantage to winning either or the other 2?
John S. Mengucci - President, CEO & Director
Yes. Louie, thanks. I'm going to stick to large for our long tried and true practice. I'm not commenting on things that aren't awarded. Yes, Wave 2 is the network build of that. I think we were very well positioned on Wave 1, and we'll have to have to see how that plays out.
Operator
These are all the questions we have for today, so I'll turn the call back to John Mengucci for closing remarks.
John S. Mengucci - President, CEO & Director
Thanks, Emily, and thank you for your help on today's call. We'd really like to thank everyone who dialed in or listened to the webcast for their participation. We know that many of you will have follow-on questions. So Jeff MacLauchlan, Dan Leckburg and George Price are all available after today's call.
Please stay healthy, and all my best to you and your families. Emily, that concludes our call. And thank you all, and have a great day.
Jeffrey D. MacLauchlan - Executive VP, CFO, & Treasurer
Thank you.
Operator
Thank you, everyone, for joining us today. This concludes our call. You may now disconnect your lines.