Staff Sgt. Benjamin Brennick, 4th Airlift Squadron loadmaster, tightens a cargo-securing chain on a C-17 Globemaster III on Joint Base Lewis-McChord, Wash., Aug. 4, 2020. Exercise Rainier War was an opportunity for several career fields across base to safely practice what they would need to do in the case of an active combat scenario. (U.S. Air Force photo by Airman 1st Class Mikayla Heineck)