Airmen assigned to the 7th Maintenance Group work on a B-1B Lancer’s hydraulic fuel line April 12, 2016, at Dyess Air Force Base, Texas, during Exercise Constant Vigilance 16. CV16 is an exercise conducted to test Air Force Global Strike Command’s ability to support conventional and nuclear missions. (U.S. Air Force Photo by Airman 1st Class Austin Mayfield/Released)