 The field became inactive in late 1945 and the property reverted to the city of Laredo, which used it as a municipal airport until 1950.That year, the base was reactivated and renamed Laredo Air Force Base in April 1952 to provide intermediate and advanced flight training for jet pilots, including pilot trainees from 24 countries.In the early 1960s, the Air Training Command transitioned to the Undergraduate Pilot Training (UPT) concept, where student pilots would take all flight training from basic through advanced at a single base.