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, work on a B-1B Lancer April 9, 2016, at Dyess Air Force Base, Texas. Perry and Boykins participated in Exercise Constant Vigilance 16, which tests the Air Force Global Strike Command’s ability to respond quickly and effectively in a real-world situation. (U.S. Air Force photo by Senior Airman Shannon Hall/Released)