A C-17 Globemaster III from Joint Base Lewis-McChord, Wash., awaits the start of a joint forcible entry exercise at Nellis Air Force Base, Nev., Dec. 10, 2016. During the Joint Forcible Entry exercise, pilots’ flying skill and decision making are tested in the execution of various missions in a contested environment. (U.S. Air Force photo by Airman 1st Class Kevin Tanenbaum)