Why it Matters

A new Government Accountability Office report found that staffing reductions, workspace limitations, and organizational changes have weakened the Department of Defense’s Office of the Director, Operational Test and Evaluation, the agency responsible for independently assessing whether military systems perform as intended. The changes have affected oversight of 173 weapon system programs, raising concerns that systems could reach warfighters without identifying operational shortcomings.

The Director of Operational Test and Evaluation has provided independent oversight of military testing for more than four decades, serving as a check on efforts to accelerate weapons development and deployment.

The Reorganization That Reshaped Defense Testing

In May 2025, the Secretary of Defense issued a memorandum directing the DOT&E to eliminate non-statutory or redundant functions and reduce its workforce. The reorganization eliminated Senior Executive Service-level deputy director positions, created a new technical director role, and established a new space and strategic warfare area.

The restructuring also reduced civilian positions, including Action Officers responsible for evaluating individual weapon system programs. The cuts affected the office’s ability to maintain specialized expertise across the range of programs under its oversight.

The impact became more apparent in the months that followed. Secure workspaces were reduced, creating challenges for Action Officers whose work often involves classified information. A work stoppage on a support contract disrupted access to testing and evaluation data for approximately two months. Remaining Action Officers were assigned responsibility for additional programs, including some outside their primary areas of expertise.

Consequences for Military Weapons Testing Oversight

DOT&E’s oversight list in 2025 included 173 Department of Defense weapon system programs. GAO found that workforce reductions have limited the office’s capacity to oversee operational testing and live-fire evaluations across those programs.

The constraints affect both major defense acquisition programs and the growing middle tier of acquisition pathway, a procurement approach designed to rapidly develop and field capabilities.

DOT&E personnel raised concerns that reduced staffing and diminished subject matter expertise could increase the risk of weapon systems reaching warfighters with unresolved operational limitations. The report also highlighted concerns that some programs using the middle tier of acquisition pathway could face challenges meeting certain testing requirements when oversight resources are limited.

The GAO Assessment

The Government Accountability Office published its findings on June 30, 2026, in a 25-page report mandated by a provision in Senate Report 119-39, which accompanies the National Defense Authorization Act for Fiscal Year 2026. GAO briefed the congressional defense committees on its preliminary findings in May 2026, giving lawmakers advance notice of the problems it had identified.

The report documents the gap between DOT&E's responsibilities and its capacity. With 173 weapon system programs on its oversight list and a depleted workforce, the office cannot perform the independent assessments that Congress has relied on for decades to prevent defective systems from reaching the field.

What Comes Next

As of June 2026, DOT&E was conducting an analysis of its workforce and workload in response to congressional inquiries.

The findings could increase congressional scrutiny of how the Defense Department balances efforts to streamline acquisition processes with maintaining independent testing and evaluation requirements.

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