The April 23, 2026 Government Accountability Office report "evaluates the extent to which DOD (1) identified critical [operations and sustainment] cost growth in its fiscal years 2023 and 2024 weapon system sustainment reviews and the causes of that growth, (2) has taken actions to address the critical O&S cost growth identified in the fiscal years 2021 and 2022 sustainment reviews, and (3) has taken steps to identify challenges and improve the sustainment review process."