U.S. Air Force Maj. Paul "Loco" Lopez, F-22 Raptor Demonstration Team pilot and commander, shakes hands with Delayed Entry Program members after an Oath of Enlishment ceremony during the Los Angeles County Air Show in Lancaster, Calif., March 24, 2018. Everyone who joins the military must swear-in by repeating the Oath of Enlistment, which service members must promise and adhere to for their entire military career. (U.S. Air Force photo by Senior Airman Kaylee Dubois)