77th Change of Command
U.S. Air Force Col. Shaun McGrath, 20th Operations Group commander, presents Lt. Col. John Vargas, 77th Fighter Squadron commander, with a certificate for the Meritorious Service Medal at Shaw Air Force Base, S.C., June 21, 2013. Vargas was succeeded in command by Lt. Col. Matthew Ayres. (U.S. Air Force photo by Airman 1st Class Nicole Sikorski/Released).