An F-16 Fighting Falcon fighter jet assigned to the 64th Aggressor Squadron (AGRS) begins its refueling run over the Nevada Test and Training Range during a Red Flag 21-1 exercise Feb. 1, 2021. The 64th AGRS provided a realistic threat in a contested environment for U.S. and coalition forces to train against. (U.S. Air Force Photo by Airman 1st Class Dwane R. Young)