[6] GAO-19-212, Contractor Business Systems (February 2019)significant deficiencies in 260 of 330 purchasing systems reviewed in fiscal years 2015 to 2017; payments withheld from 11 contractors, about $238 million, in July 2018; 15 months to 5 years or more to resolve deficiencies in six cases
[11] US Bureau of Labor Statistics, producer price indexes, January 2020 and August 2026 (preliminary)aerospace product and parts manufacturing (PCU3364--3364--), bolts, nuts, screws, rivets and washers (PCU332722332722), nickel alloy mill shapes (WPU10250466), steel investment castings (PCU331512331512), ball and roller bearings (PCU332991332991), iron and steel forging (PCU332111332111), titanium mill shapes (WPU10250505)
[13] GAO-22-104621 (October 2021)small businesses receiving DoD contract awards fell from 42,723 in fiscal 2011 to 24,296 in fiscal 2020
[14] GAO-24-106649 (April 30, 2024)a missile program facing circuit card assembly lead times rising from 19 to 34 months if unmitigated; two programs with difficulty obtaining titanium and nickel in time
[15] GAO-25-107283 (July 24, 2025)155 mm ammunition production rising from 168,000 to 1.2 million rounds a year, with the Army qualifying suppliers for metal shells and forging