This case arises from the government’s default termination in 1991 of a contract between the United States Navy and defense contractors McDonnell Douglas Corporation and General Dynamics Corporation (the “Contractors”) to develop a carrier-based stealth aircraft. The Contractors challenge the judgment of the Court of Federal Claims in favor of the government,
McDonnell Douglas Corp. v. United States,
I
A
Now in its twelfth year of litigation, this case once again returns to this court. We have previously provided in detail the facts underlying this contract dispute.
See McDonnell Douglas Corp. v. United States,
In 1988, the Navy awarded McDonnell Douglas Corporation (“MDC”) and General Dynamics Corporation (“GD”) a fixed-price contract with a ceiling price of $4,777,330,294 to research and develop a carrier-based “stealth” attack aircraft called the “A-12 Avenger.”
Id.
at 1322. The full-scale engineering and development (“FSD”) contract required the Contractors to design and build eight stealth aircraft according to a specified delivery schedule, with the first aircraft to be delivered in June 1990 and the remaining seven
*1011
aircraft to be delivered monthly through January 1991.
Id.
The contract also gave the Navy the option to purchase four production lots of aircraft, and the Navy exercised its option on the first production lot in May of 1990.
McDonnell Douglas XI,
From the outset, the Contractors encountered difficulties in performing the contract, especially in meeting the contract schedule and in keeping the aircraft weight within specifications.
McDonnell Douglas X,
Subsequently, more problems arose concerning the FSD contract, leading the Department of Defense (“DoD”) and the Navy to question the viability of the project. Id. at 1322-23. On December 17, 1990, Rear Admiral William Morris, the contracting officer, sent a cure notice to the Contractors, informing them of his intention to terminate the contract for default based on the Contractors’ failure to timely fabricate the required parts and to meet specification requirements. See id. at 1323. In their response dated January 2, 1991, the Contractors conceded that they could not meet the new delivery schedule, but denied that they were in default and asserted that the new delivery schedule was invalid or unenforceable. Id. As suggested cure, they again submitted a proposal to restructure the FSD agreement to a cost-reimbursement contract. Id. In exchange for that restructuring, the Contractors would absorb $1.5 billion in fixed loss and would waive their claims for equitable adjustment. Id.
After numerous meetings with DoD and Navy principals, Admiral Morris terminated the contract for default on January 7, 1991. Id. at 1323-24. A few weeks later, the Navy sent a letter to the Contractors demanding the return of approximately $1.35 billion in unliquidated progress payments under the terminated contract. Id. at 1324.
In June of 1991, the Contractors sought relief in the Court of Federal Claims under the Contract Disputes Act, 41 U.S.C. § 609(a) (2000). After protracted litigation, the trial court held that the Contractors’ performance did not constitute the basis for the Navy’s decision to terminate, and the court therefore converted the default termination into a termination for convenience.
McDonnell Douglas X,
After a six-week trial on remand, the Court of Federal Claims ruled in favor of the Navy.
McDonnell Douglas XI,
After entry of judgment, the government moved for a favorable entry of monetary judgment ordering that the Contractors return $1.35 billion in progress payments. Because the trial court determined that the government did not submit a counterclaim and that the unliquidated damages were not an issue in the litigation, the Court of Federal Claims ruled “it was not necessary for this court to address what we consider to be a[n] understanding among the parties that was outside the focus of this case.”
The Contractors appealed the trial court’s judgment and challenged the trial court’s construction of our mandate, determination that the unilateral schedule was enforceable and unwaived, and dismissal of their “superior knowledge” claims. The government cross-appealed for the return of the $1.35 billion in unliquidated progress payments. We have jurisdiction over this case pursuant to 28 U.S.C. § 1295(a)(3).
B
We review issues of law
de novo,
without deference to the trial court.
Bass Enters. Prod. Co. v. United States,
II
A
On remand, the Court of Federal Claims sustained the default termination based solely on the Contractors’ conceded inability to make the December 1991 first flight date.
McDonnell Douglas XI,
The Court of Federal Claims, however, misconstrued our mandate. Although the trial court believed that we disposed of certain issues related to the Navy’s justification for the default termination, a plenary review of our opinion in
McDonnell Douglas X
belies that proposition.
See Engel Indus.,
In
McDonnell Douglas X,
we only addressed two major issues: (1) the govern-
*1013
merit's challenge to the trial court’s conversion of a default termination into one for convenience; and (2) the Contractors’ cross-appeal that the government was without power to terminate an incrementally-funded contract for default.
McDonnell Douglas X,
In addressing the propriety of converting the default termination, we first determined that the Court of Federal Claims misinterpreted the holding of
Schlesinger v. United States,
On remand, if the government can establish that Contractors were in default, then the termination for default would be valid. See Lisbon Contractors, Inc. v. United States,828 F.2d 759 , 765 (Fed. Cir.1987) (holding that the government bears the burden of proof with respect to the issue of whether termination for default was justified). Conversely, if the government is not able to make this showing, then the default termination was invalid and Contractors would be entitled to a suitable recovery, presumably under a termination for convenience theory.
Id. at 1329.
After vacating the trial court’s rulings on the loss-ratio and doctrine of superior knowledge in light of our disposition of the conversion question, id. at 1329-30, we addressed whether the government had the authority to terminate for default an incrementally-funded contract. Id. at 1330. On that issue, we determined that the government had that authority, holding “only that the contract, throughout its term, embodied a duty to make progress toward the ultimate end item.” Id. at 1332. We finished that discussion by stating, once again:
The question of whether Contractors satisfied their duty is of course that of breach, and must be determined by taking into account all of the relevant facts and testimony, such as Contractors’ statements that they could not meet the contract specifications, the contract delivery schedule, nor complete performance at the specified contract price. See supra Part II.B. We leave it to the trial court to resolve these issues in the first instance.
Id. The conclusion section of our opinion reiterated those limited rulings and instructed the trial court to afford the parties an opportunity to litigate the legitimacy of the default termination’s justification. Id. at 1332-33.
Our decision in McDonnell Douglas X did not state whether there was in fact a default. Our ruling had a limited scope, and we emphasized that point by refusing to address the merits of the government’s default justification. Id. at 1332 (“Of course, we do not hold today that the government’s default termination is justified.”). Neither the text of our opinion nor its related judgment contained any indication, expressly or by intimation, that we intended to limit the default justification inquiry on remand to the reasonableness of the December 1991 delivery date. And, there is nothing in the trial court’s opinion that elucidates the basis for its misinter *1014 pretation of our mandate. Therefore, we must conclude that the Court of Federal Claims misunderstood our mandate.
Because our decree does not require such a result, the trial court’s finding that the unmet first flight date in December 1991 was reasonable is insufficient to sustain a default termination in this case.
See Lisbon,
Although the parties have requested that we finally dispose of this protracted litigation on appeal, the record at this point does not permit us to do so. In determining whether a default termination was justified, a court must review the evidence and circumstances surrounding the termination, and that assessment involves a consideration of factual and evidentiary issues.
See id.
at 766-67 (reviewing trial court’s factual findings and decision regarding default termination for clear error). Because the Court of Federal Claims focused its ruling on the reasonableness of the December 1991 date, it did not make adequate findings on whether the Navy justifiably terminated the Contractors for default. Mindful of our limited role as a court of appeals,
Baxter Healthcare Corp. v. Spectramed, Inc.,
B
On remand, the Court of Federal Claims must address the issue that warranted a remand in
McDonnell Douglas X:
“[W]hether the government’s default termination was justified, an issue upon which we express or intimate no view.”
McDonnell Douglas X,
In this case, the government’s authority to terminate the contract for default derives from the incorporated terms of FAR 52.249-9. That FAR clause provides:
(a) (1) The Government may, subject to paragraphs (c) and (d) below, by written Notice of Default to the Contractor, terminate this contract in whole or in part if the Contractor fails to—
(ii) Prosecute the work so as to endanger performance of this contract (but see subparagraph (a)(2) below);
48 C.F.R. § 52.249-9 (1984). The plain language of the default provision permits termination whenever the contractor fails to “[pjrosecute the work so as to endanger performance of this contract.” Id.
The parties advance drastically opposite interpretations of this default provision. The Contractors contend that our precedent, such as Lisbon, permits a default termination only upon repudiation or impossibility of performance. As they explain, “a contractor’s deficiencies must therefore be so severe as to be the practical equivalent of a repudiation or aban *1015 donment of the entire contract effort.” Because the Contractors believe that “it must be clear that the contractor cannot or will not complete performance,” they submit that it is improper to default terminate a contractor merely because it is unable to meet an interim contract milestone. The government, in contrast, argues that the interpretation of this specific default provision is an issue of first impression and that the circumstances of this case are so different that we should not seek guidance from precedent. Rather, according to the government, the default provision in this contract permits termination whenever a contractor raises concerns about its ability to satisfy a contractual requirement, such as meeting a schedule or some specification requirements. Under that construction of the default clause, the government argues that default termination was appropriate here given the Contractors’ admitted inability to meet an interim contract milestone, the alleged impossibility for the aircraft design to meet contract specifications, and the Contractors’ request for a restructuring of the agreement.
We disagree with the parties’ interpretations of the default clause in this contract. Contrary to the Contractors’ position, the default provision does not require absolute impossibility of performance or a contractor’s complete repudiation or abandonment.
Discount Co. v. United States,
The pragmatic approach we adopted in
Lisbon
achieves that desired balance and provides the proper interpretation of the default clause.
1
Like this case,
Lisbon
involved a default termination of a contractor for failure to prosecute with diligence, despite the fact that the contractor still had time to complete performance of the contracted project.
Lisbon,
In applying that standard, we have required that the contracting officer’s termination decision be based on tangible, direct evidence reflecting the impairment of timely completion.
See Lisbon, 828
F.2d at 766 (“At trial, the government did not offer
direct
testimony or any other
direct
evidence on the time which it estimated it would take Lisbon to complete the contract”). In other words, a court’s review of default justification does not turn on the contracting officer’s subjective beliefs, but rather requires an objective inquiry.
Id.
at 766-67 (reviewing evidence underlying government’s default termination). Although the contracting officer’s testimony and contemporaneous documents are relevant to that determination,
id.
at 766, the trial court may also consider other factors usually relied upon by courts and contract boards, such as a comparison of the percentage of work completed and the amount of time remaining under the contract,
see, e.g., Thomas & Sons, Inc.,
ASBCA No. 51,874, 01-1 B.C.A. (CCH) ¶ 31,166 (ASBCA Nov. 13, 2000);
Nat’l Interior Contractors, Inc.,
ASBCA No. 46,089, 96-2 B.C.A. (CCH) ¶ 28,370 (1996);
*1017
the contractor’s failure to meet progress milestones,
see, e.g., James E. Kennedy, Tr. v. United States,
Our precedent does not require, however, that the contracting officer be correct in his assessment, as the Contractors would have us rule. He only needs to be “justifiably insecure about the contract’s timely completion.”
Discount,
To make that determination, the Court of Federal Claims will first have to decide the actual performance that the contract requires and the amount of time remaining for performance.
See Lisbon,
In this case, the parties do not agree on either of those underlying issues. They each harbor differing views of the contract completion date, ranging from the opinion that no such date existed, to the notion that the design and testing under the contract would require at least four to five years, to the suggestion that missing the first aircraft delivery date was tantamount to failing to timely complete the contract. In addition, the parties seem unsure whether the contract solely requires delivery of the eight prototype aircraft or *1018 whether the agreement also requires delivery of the production lot purchased by the Navy under the contract’s option provisions. Given those competing claims and the incomplete record before us, we leave it to the trial court to determine on first instance the actual performance required by the contract and the amount of time remaining for that performance.
To summarize, on remand, once the Court of Federal Claims determines the performance required by the contract and the contract completion date, it can then decide, in light of the information upon which the contracting officer relied in deciding to terminate for default, whether the government has met its burden of proving that the contracting officer had a reasonable belief that there was no reasonable likelihood that the contractor could perform the entire contract effort within the time remaining for performance. 3 As we explained in McDonnell Douglas X:
On remand, if the government can establish that Contractors were in default, then the termination for default would be valid. Conversely, if the government is not able to make this showing, then the default termination was invalid and Contractors would be entitled to a suitable recovery, presumably under a termination for convenience theory.
McDonnell Douglas X,
Ill
We now turn to the other issues raised by Contractors in this appeal. The Contractors challenge the trial court’s determination that the government’s unilateral schedule was enforceable and not waived. Moreover, they contend that it was reversible error to preclude them from litigating their “superior knowledge” claim based on the government’s invocation of the Military and State Secrets privilege. We address each contention seriatim.
A
After the Contractors failed to meet the June 1990 delivery date and the parties could not agree on a new bilateral schedule, the Navy unilaterally imposed a new delivery schedule through the issuance of Modification No. P00046. Because the unilateral schedule was allegedly not reasonable, the Contractors argue that the schedule is not enforceable. We disagree.
*1019
If the government elects to permit a delinquent contractor to continue performance past a due date as it did in this case by waiving the June 1990 delivery date,
McDonnell Douglas XI,
Beyond this standard of reasonableness, our precedent does not impose the additional burdens that the Contractors would impose on the government when the United States unilaterally imposes a new completion date. Contrary to what GD contends, our precedent neither requires a determination of “what work remained to be completed as of the date the unilateral schedule was issued,” nor does it necessitate an inquiry into “how long it likely would have taken the contractor to complete the remaining work, given its actual production capabilities as of the date the schedule was issued.” Although those inquiries may be appropriate in certain situations, they are not requisite underpinnings for the DeVito reasonableness determination. Similarly, we reject the “objective achievability” paradigm suggested by the Contractors as not rooted in our precedent. Were we to adopt this new criterion, we would depart from our case law by requiring more than reasonableness; we would compel the government to have perfect prescience and be infallible in its decision. Because such an expectation is unachievable, the touchstone of this inquiry must remain grounded on reasonableness based on what the government knew or should have known when it adopted the unilateral schedule.
Based on the information available at that time, the government’s unilateral schedule was reasonable. After the parties failed to agree on a new schedule, the government proceeded to adopt a new performance schedule through a methodical inquiry. Captain Elberfeld, who prepared the schedule, conducted an independent analysis, taking into account all the issues and information then available to him. He did not solely rely on the Contractors’ estimates, having lost confidence in their ability to correctly predict the schedule. Rather, he added an additional 25 percent for slippage on top of the Contractors’ estimates, took into account the micro-cracking problems with the prototypes and the Contractors’ work on resolving that issue, consulted with different qualified personnel of the Navy and the Contractors, and considered the Contractors’ track-record and evidence of progress. As the trial court found, “once given his orders to develop a unilateral first flight schedule, Captain Elberfeld went about his mission in a thorough and comprehensive manner.” McDonnell XI, 50 Fed Cl. at 318. In fact, “Captain Elberfeld set a schedule that took into account the critical information that he had at the time.” Id. at 318-19. On that basis, the Court of Federal Claims found that the December 1991 first flight date was reasonable and enforceable. We do not see any clear error in that finding.
B
Similarly, we agree with the Court of Federal Claims that the Navy
*1020
did not waive the December 1991 first flight date. For a waiver of default to occur, there must be both a “(1) failure to terminate within a reasonable time after the default under circumstances indicating forbearance, and (2) reliance by the contractor on the failure to terminate and continued performance by him under the contract, with the Government’s knowledge and implied or express consent.”
DeVito,
First, the facts do not substantiate the Contractors’ allegations of forbearance based on the Navy’s references to a date in the first quarter of 1992 as the first test flight date. The Navy mentioned that 1992 date on only two occasions, neither of which involves the necessary indicia of forbearance. The first time, when Captain Elberfeld mentioned the 1992 date during a presentation at the Tailhook Convention in September 1990, he was merely attempting to manage expectations and trying to provide an estimated date for planning purposes. The second time, when Captain Elberfeld told the Contractors at a Defense Acquisition Board meeting to assume a March 1992 first flight date, he made his statement contingent upon a restructured program that was being negotiated at that time but never materialized. The Court of Federal Claims, having heard the live testimony and having had the opportunity to assess the witnesses’ credibility, found that those two situations did not amount to an intended forbearance. The record supports that finding, and the Contractors have not shown that trial court clearly erred.
Second, the Contractors failed to show any evidence of detrimental reliance on the government’s alleged waiver. Although the Contractors spent over $100 million every month to perform the contract, they ■ would have done so regardless of whether their perceived deadline was December 1991 or March 1992. The significant monthly expenditure is not evidence of a change in position based on detrimental reliance; it just indicates that the Contractors were attempting to perform their contractual duties. The Contractors have not provided evidence, to this court or the trial court, that they adjusted their work or delayed their scheduled performance based on the expectation that the delivery date was four months later than December 1991. Without such evidence, we decline to disturb the Court of Federal Claims’ finding that the government did not waive the December 1991 deadline.
C
Finally, we see no error in the trial court’s decision to reject the Contractors’ claim of “superior knowledge.” As we previously explained, “[i]n government contracts law, under certain circumstances the government owes a duty to disclose critical information to a contractor that is necessary to prevent the contractor from unknowingly pursuing a ruinous course of action.”
McDonnell Douglas X,
The Military and State Secrets privilege allows the United States to block discovery in a lawsuit of any information that, if disclosed, would adversely affect national security.
Crater Corp. v. Lucent Techs., Inc.,
[t]he privilege belongs to the Government and must be asserted by it; it can neither be claimed nor waived by a private party. It is not to be lightly invoked. There must be a formal claim of privilege, lodged by the head of the department which has control over the matter, after actual personal consideration by that officer. The court itself must determine whether the circumstances are appropriate for the claim of privilege, and yet do so without forcing a disclosure of the very thing the privilege is designed to protect.
United States v. Reynolds,
Once the privilege is properly invoked by a government official with adequate authority and there is independent judicial review of the circumstances, “even the most compelling necessity cannot overcome the claim of privilege if the court is ultimately satisfied that military secrets are at stake.”
Reynolds,
Thus, when the “very subject matter of the action” is a state or military secret, the action must give way to the proper invocation of the state secrets privilege.
See Totten v. United States,
In this case, the two requirements for applying the state seqrets doctrine were satisfied. First, the Secretary of the Air Force made the formal assertion by submitting a declaration setting forth the reasons for invoking the privilege. 4 As he explained, discovery of the information sought by the Contractors may lead to inadvertent and unauthorized disclosure of the stealth technology unavailable in other countries and may pose a grave risk to our national security. To buttress that assertion, he also submitted to the trial court, for in camera review, a classified declaration that provided in more detail the specific reasons why disclosure of the information sought by the Contractors would endanger our national and military interests.
Second, after review of the declarations and the circumstances surrounding the invocation of the privilege, the trial court determined that the circumstances for the assertion were appropriate. In the original trial, a series of security breaches and discovery abuses led the trial court to conclude that litigation of the superior knowledge could not proceed.
McDonnell Douglas X,
We agree with that ruling. Not only has the Secretary of the Air Force properly invoked the privilege as required by the Supreme Court, but to litigate the superior knowledge claim would require giving the Contractor’s attorneys access to the classified information and ultimately divulging the information at trial.
See Fitzgerald v. Penthouse Int’l, Ltd.,
The Contractors concede that the properly invoked privilege attaches to this *1023 proceeding. Instead, they contend that the Due Process Clause of the Fifth Amendment trumps the privilege by giving them a right to present all available defenses, including the superior knowledge defense. Relying on an application of the Due Process Clause in criminal cases, the Contractors argue that the Fifth Amendment compels the government to choose between fully disclosing classified information and proceeding with the prosecution of its claim. According to the plaintiffs, because the government refused to fully disclose the sécrets, the default termination decision must be dismissed. However, in making that argument, the Contractors essentially conflate rules governing criminal and civil proceedings, elevating this civil contract dispute into the constitutional territory of a criminal prosecution. The Supreme Court has already considered the Contractors’ very argument in the Military and State Secrets privilege context and rejected it:
Respondents have cited us to those cases in the criminal field, where it has been held that the Government can invoke its evidentiary privileges only at the price of letting the defendant go free. The rationale of the criminal cases is that, since the Government which prosecutes an accused also has the duty to see that justice is done, it is unconscionable to allow it to undertake prosecution and then invoke its governmental privileges to deprive the accused of anything which might be material to his defense. Such rationale has no application in a civil forum where the Government is not the moving party, but is a defendant only on terms to which it has consented.
Reynolds,
Without a legal basis for their argument, the Contractors support their contention with practical concerns. According to the Contractors, an affirmance of the trial court’s ruling on this issue would permit the government to abuse its authority as both litigant and sovereign and would lead it to use default termination as a ready alternative to terminations for convenience. For those reasons, the Contractors submit that they must have a right to either gain access to the military secrets or have the default termination vacated. We disagree. First, although the Contractors ascribe a fraudulent and deceptive intent to the government and its agents, they have not presented any evidence or corroborative facts to support their allegations. Nor have they cited any case in which the government has actually misused the Military and State Secrets privilege as they describe. Second, if we acceded to the Contractors’ request and burdened the government with a duty in a civil setting to either divulge the state secrets or face an adverse disposition of the suit, we would ignore controlling precedent from the Supreme Court and authorities from other circuits that have unequivocally dismissed private claims that threatened to expose a state secret protected by the privilege.
Reynolds,
Because the requirements for the Military and State Secrets privilege to attach were satisfied, we affirm the trial court’s refusal to permit further litigation of the Contractors’ superior knowledge claims.
IV
The government also filed a cross-appeal, claiming that the Court of Federal Claims should have entered monetary judgment in its favor for the unliquidated progress payments made to the Contractors. The trial court declined to enter judgment for the government because it did not find it necessary to address that claim.
We similarly decline to rule on this premature cross-appeal. As the government admits, “[ujntil entry of a judgment sustaining the default, our so-called ‘claim’ for the unliquidated progress payments would not have been ripe.” Since we vacated the trial court’s judgment sustaining the default termination, the claim for a monetary judgment in the government’s favor has lost its necessary predicate and is therefore not ripe for appellate review.
V
In sum, because the Court of Federal Claims did not apply the controlling standard under Lisbon to this case, we vacate its ruling that the default termination was justified and remand for further proceedings consistent with this opinion. As to the Contractors’ appeal of other discrete issues, we affirm the trial court’s decisions on the enforceability and nonwaiver of the unilateral schedule and on the dismissal of the Contractors’ “superior knowledge” claim in light of the government’s proper assertion of the Military and State Secrets privilege. Finally, we decline to address or disturb the trial court’s decision related to the government’s claim for unliquidated progress payments.
VACATED-IN-PART, AFFIRMED-IN-PART, AND REMANDED.
Notes
. Although the government distances itself from
Lisbon
in this appeal, it relied on that precedent throughout the proceedings on remand. Indeed, the government urged the Court of Federal Claims to apply the
Lisbon
standard in its opening argument, during trial, in its closing statement, and in its post-trial briefs. Our jurisprudence does not condone such a reversal in position between trial and appeal.
See Interactive Gift Express, Inc. v. Compuserve Inc.,
. This standard is accepted and applied by the contract boards and trial courts in reviewing default terminations for failure to make progress. Indeed, the Boards of Contract Appeals, whose specialized expertise with government contracts is entitled to respect, have long adopted the
Lisbon
standard in reviewing the government's default termination of contractors who allegedly failed to prosecute their work with diligence.
See, e.g., Bison Trucking & Equip. Co.,
ASBCA No. 53,390, 01-2 B.C.A. (CCH) ¶ 31,654 (2001);
Thomas & Sons, Inc.,
ASBCA No. 51,874, 01-1 B.C.A. (CCH) ¶ 31,166 (ASBCA Nov. 13, 2000);
Santee Dock Builders,
AGBCA No. 96-161-1, 99-1 B.C.A. (CCH) ¶ 30,190 (AGBCA Dec. 17, 1998);
Nat’l Interior Contractors, Inc.,
ASBCA No. 46,089, 96-2 B.C.A. (CCH) ¶ 28,370 (ASBCA May 23, 1996);
Am. Int’l Contractors, Inc./Capitol Indus. Constr. Groups, Inc.,
ASBCA No. 39,544, 95-2 B.C.A. (CCH) ¶ 27,920 (1995);
Hillebrand Constr. of Midwest, Inc.,
ASBCA No. 45,853, 95-1 B.C.A. (CCH) ¶ 27,464, (ASBCA Jan. 18, 1995);
Mich. Joint Sealing, Inc.,
ASBCA No. 41,477, 93-3 B.C.A. (CCH) ¶ 26,011 (ASBCA Apr. 26, 1993),
aff'd,
. Although the parties disagreed at oral argument whether the trial court should show any deference to the contracting officer's decision, it is well-settled that the Court of Federal Claims reviews the decision to termináte a contractor for default
de novo. See Wilner v. United States,
. Although this case involves the Navy, the person authorized by the President in Executive Order 12,958 to determine the proper classification of information is the Secretary of the Air Force.
