U.S. Air Force Tech. Sgt. Ross Perry, 7th Aircraft Maintenance Squadron electronic warfare noncommissioned officer in charge, left, and Airman 1st Class Terrance Boykins, 7th AMXS crew chief, open a panel on a B-1B Lancer during Exercise Constant Vigilance 16 April 9, 2016, at Dyess Air Force Base, Texas. Air Force Global Strike Command conducts exercises to ensure Airmen are ready to perform nuclear deterrence operations and deliver long-range strike missiles anytime, anywhere. (U.S. Air Force photo by Senior Airman Shannon Hall/Released)