In 2021, the Project on Government Oversight published an analysis of the revolving door between the Department of Defense and the defense industry. It found that between 2008 and 2018, 380 high-ranking Department of Defense officials and military officers took jobs with the 20 largest defense contractors within two years of leaving government service. These were not junior staffers. They were generals, admirals, undersecretaries, deputy secretaries, and senior program managers — people with direct authority over procurement decisions, budget allocations, and contract awards.
On the other side of the door: senior executives from defense contractors take positions as senior Pentagon officials, where they oversee programs that directly benefit the companies they came from and will return to. Defense industry executives have served as Secretary of Defense, Deputy Secretary of Defense, and in dozens of sub-cabinet positions with direct authority over weapons procurement.
This is not a bug in the defense procurement system. It is the system.
The Numbers
The United States spends more on defense than the next 10 countries combined. The fiscal year 2024 defense budget was approximately $858 billion. Of that, roughly $400 billion flows to private contractors — the largest of which are Lockheed Martin, Raytheon, Boeing Defense, General Dynamics, and Northrop Grumman.
These five companies received, collectively, approximately $150 billion in federal contracts in 2023. Their combined lobbying expenditure was approximately $60 million. Their combined political contributions were substantially larger when including PACs, employee contributions, and dark money channels.
The return on investment from that lobbying and political spending is not subtle. The F-35 program — the most expensive weapons system in history at over $1.7 trillion in projected lifetime costs — has faced persistent criticism from the Government Accountability Office for cost overruns, schedule delays, and performance deficiencies. Congressional opposition to the program has been systematically neutralized by Lockheed Martin's deliberate geographic distribution of F-35 subcontracting across 45 states, ensuring that nearly every senator and a majority of representatives have F-35 jobs in their districts. Killing the program would require voting to eliminate jobs in your own state. This is not an accident of supply chain management. It is a political immunization strategy.
How the Revolving Door Works in Practice
When a senior military officer retires after 30 years of service, they receive a military pension. They also possess something more valuable: relationships, institutional knowledge, and security clearances. Defense contractors pay handsomely for access to those assets.
A retired four-star general or admiral can earn $300,000 to $500,000 per year as a board member at a major defense contractor. They do not design weapons systems. They open doors. They make phone calls. They attend meetings with former colleagues who are still in uniform. The transaction being sold is access to the procurement process.
The relationship is mutually reinforcing. Officers who are still in service know that retirement from the Pentagon can lead to a lucrative second career in the defense industry — but only if they maintain good relationships with the industry during their service. The implicit financial incentive to be contractor-friendly while still in uniform does not require explicit corruption. It is structural.
The POGO analysis found that in many cases, retiring officials moved directly into positions overseeing programs they had been responsible for approving as government employees. A program manager who oversaw the development and procurement of a specific weapons system retires, and within months joins the company that builds that system as a senior vice president. The company's interest in the continuing program is obvious. The former official's value to the company is their institutional relationships and their knowledge of the program's internal vulnerabilities and contract structure.
The Audit That Never Happens
The Department of Defense is the only major federal agency that has never passed an independent financial audit. The DoD began attempting to audit its finances in 2018. Five consecutive audits have found the financial records to be unauditable — the systems are too fragmented, the records too incomplete, the asset tracking too inadequate to produce a clean audit opinion.
This matters for the revolving door because missing money is, in some cases, not missing at all. It is just not accounted for. The Pentagon cannot account for $21 trillion in accounting adjustments between 1998 and 2015, according to Michigan State University economist Mark Skidmore's analysis of publicly available data. This figure — which the DoD has disputed without fully disproving — suggests that the opacity of defense accounting is not a technical problem awaiting a software solution. It is a feature that allows money to move through the system without meaningful oversight.
When the officials responsible for managing that money retire and join the companies receiving that money, the oversight gap becomes a structural opportunity for extraction. The contractors know the budget processes, the accounting systems, and the contract structures from the inside. The revolving door personnel are the institutional knowledge that makes that navigation possible.
Congressional Layering
Congress is supposed to provide oversight of defense spending. It does not, in any meaningful sense, perform this function. The House and Senate Armed Services Committees — the primary oversight bodies — are populated by members who receive substantial campaign contributions from defense contractors. In the 2020 election cycle, the top 20 defense contractors contributed approximately $25 million to congressional campaigns, with the largest amounts going to members of the Armed Services, Appropriations, and Intelligence committees.
The committees also receive support from a second tier of influence: the network of think tanks, policy institutes, and consulting firms that study defense policy and advocate for defense spending. The Center for Strategic and International Studies, the Mitchell Institute for Aerospace Studies, and the Hudson Institute, among others, receive significant funding from defense contractors. Their policy outputs — reports, congressional testimonies, op-ed columns — consistently argue for maintaining or increasing defense budgets and against procurement reform.
The revolving door, the contractor campaign contributions, and the funded think tank network form an interlocking system that makes meaningful congressional oversight of defense spending essentially impossible. No individual element of the system is illegal. The system as a whole is a capture operation.
The Periodic Reform That Never Reforms
After every major defense procurement scandal — and there have been many — Congress holds hearings, passes legislation, and imposes new ethics rules. The rules require cooling-off periods before revolving-door hires (currently one to two years, depending on the position), mandate recusal from matters involving former employers, and limit the use of non-public information in private employment.
These rules are enforced with varying seriousness and routinely circumvented. The cooling-off period applies to direct negotiation with the former employer but not to advocacy for the industry more broadly. The recusal requirements depend on self-disclosure and self-enforcement. The definition of "non-public information" is narrow enough to permit the use of institutional relationships and informal knowledge that is the primary value the revolving-door hire brings to their new employer.
The result is that ethics reform in the defense sector produces an ethics compliance industry — lawyers who advise officials on how to manage their transition to the private sector within the rules — rather than a meaningful reduction in the conflicts of interest the rules are designed to address.
The system self-regenerates because it serves the financial interests of both the industry and the officials who pass through it. Structural reform would require eliminating the financial incentive — either through substantially longer cooling-off periods, lifetime bans from contracting with former employers, or the elimination of private-sector contracting for core defense functions. None of these options has serious political support, because the people who would have to support them are the people who benefit from the current system.