A major Pentagon project to bolster ballistic missile defenses on the Korean peninsula faltered last fall when the Terminal High Altitude Area Defense system attempted -- and failed -- to control two Patriot guided-missile interceptors during a previously unreported flight test. On Sept. 9, 2021, the Missile Defense Agency and the Army Program Executive Office Missiles and Space executed a flight test at White Sands Missile Range, NM, as part of a project begun in 2017 to meet an “urgent...