U.S. Air Force Master Sgt. Joe Johnston, 9th Air Refueling Squadron KC-10 boom operator, refuels the Air Force Thunderbirds May 15, 2020, over southern California.The Thunderbirds' flyover of San Diego and LosAngeles was dedicated to the healthcare workers, first responders,
military and essential employees battling COVID-19 in California. It also served as the Thunderbirds' final mission for the #AmericaStrong
campaign. More