U.S. Air Force Staff Sgt. Martin Perez, 52nd Maintenance Squadron dedicated crew chief, checks the landing gear of an F-16 Fighting Falcon aircraft at Spangdahlem Air Base, Germany, Nov. 27, 2018. The landing gear of an F-16 must be checked frequently to make sure it is in top shape. (U.S. Air Force photo by Airman 1st Class Jovante Johnson)