The Defense Department has not collected or provided Congress with sufficient information to address risks or shortfalls in the supply chain for materials deemed critical for national defense, according to a new Government Accountability Office report . The National Defense Stockpile, established in 1939 via the Strategic and Critical Materials Stock Piling Act, focuses on buying and holding materials for a long period of time that are deemed essential for military and civilian sector use. Since a 2022 amendment to...