The Government Accountability Office has found the Defense Department has underestimated its fuel costs for fiscal year 2024, creating a $1.6 billion shortfall that has gotten the attention of a senior Senate appropriator. GAO, in an information paper shared with congressional appropriators and authorizers , states that as of March 2023, DOD has “understated” its fuel costs for FY-24 by around $1.6 billion, projecting a per-barrel cost of $111.73, while GAO projects $134.05. Senate Appropriations Committee Ranking Member Susan Collins...