Retired Air Force pilot Lt. Col. Bob Pardo poses in front of a static display model of an F-4 Phantom II, one of the many fighter aircraft he has flown, at Luke Air Force Base, Ariz., Dec. 12, 2017. During the Vietnam War, Pardo saved the lives of a fellow Phantom aircrew when he used his own aircraft to push their battle-damaged jet almost 90 miles into friendly airspace. This act came to be known as “Pardo's Push.” (U.S. Air Force photo/Senior Airman Ridge Shan)