A classified Defense Department investigation has identified what is believed to be the root cause of a 2021 missile defense failure, giving the Missile Defense Agency confidence to plan a do-over flight test this year that will pit a pair of Standard Missile-6 interceptors against a medium-range ballistic missile target. The Flight Test Aegis Weapon System-31 (FTM-31) Event 1 Failure Review Board has completed a nearly year-long assessment as to why an SM-6 salvo shot -- featuring Dual II (ballistic...
