A U.S. Air Force E-4B aircraft sits on the ramp outside the 726th Air Mobility Squadron at Spangdahlem Air Base, Germany, June 4, 2014. The E-4B is an airborne platform that will host the Family of Advanced Beyond Line-of-Sight Terminals, which provide U.S. leaders with secure, survivable, satellite communications during all phases of a nuclear conflict. FAB-T entered into Milestone C Sept. 1, 2015, progressing into the production and development phase. (U.S. Air Force photo by Senior Airman Gustavo Castillo/Released)