U.S. Air Force Master Sgt. Willie Bryant, 307th Civil Engineer Squadron water fuels maintenance system superintendent, fights to open a sink valve at Tyndall Air Force Base, Florida, Feb. 11, 2020. Bryant was setting up tents as part of Silver Flag, an exercise that trains Air Force civil engineers to efficiently set up bare base operations in a forward environment. (U.S. Air Force photo by Master Sgt. Ted Daigle)