An HH-60 Pave Hawk helicopter, assigned to the 34th Weapons Squadron, sits inside a C-17 Globemaster III, assigned to the 57th Weapons Squadron, McChord Air Force Base, Wash., at Nellis Air Force Base, Nev., March 28, 2017. The HH-60 is the primary search-and-rescue helicopter for the Air Force, and can also be tasked with disaster and humanitarian relief missions. (U.S. Air Force photo by Airman 1st Class Andrew D. Sarver/ Released)