Patriot Modernization: Oversight Mechanism Needed to Track Progress and Provide Accountability, GAO-16-488: Published: Aug 25, 2016. Publicly Released: Aug 25, 2016: “While the currently fielded version of the Army’s Patriot surface-to-air missile system is an improvement over prior versions, the Army currently plans to spend about $2.9 billion between fiscal years 2013 and 2021 on… Continue Reading