The Missile Defense Agency plans to decommission a pair of Space Tracking and Surveillance System satellites originally launched in 2009 -- assets that have already delivered three times their originally forecast service life, according to the agency's director. Missile Defense Agency Director Vice Adm. Jon Hill disclosed the development this week, discussing the rationale for the change in a pair of online conferences, noting the advent of the Hypersonic and Ballistic Tracking Space Sensor constellation -- planned to begin on-orbit...
