HILL AIR FORCE BASE, Utah (AP) — The U.S. Air Force has conducted an exercise involving the launch of 52 fighter jets from a Utah air base. The Standard-Examiner reports Hill Air Force Base launched the F-35A Lightning II fighters over a 10-minute period around 11 a.m. Monday. The 388th and 419th Fighter Wings conducted the combat exercise that sent the jets to the Utah Test and Training Range. The 388th vice commander said Monday’s exercise was planned as a culminating event after the fighter wings received their full complement of jets and was not in response to the escalating situation with Iran.