Airmen assigned to the 62nd Aircraft Maintenance Squadron spray a C-17 Globemaster III with deicing liquid at Joint Base Lewis-McChord, Wash., Jan. 16, 2019. Ice and snow on the flight control surfaces, such as the tail and wings, can introduce unknown aerodynamic characteristics that may render the aircraft unsafe for takeoff. (U.S. Air Force photo by Senior Airman Tryphena Mayhugh)