Retreat and flag-burning ceremonies honor Flag Day Published July 7, 2016 By Senior Airman Apryl Hall Minot Air Force Base Public Affairs MINOT AIR FORCE BASE, N.D. -- Airman Leadership School class 16-E graduates lower the flag during a formal Retreat Ceremony at Minot Air Force Base, N.D., June 29, 2016. The ALS graduates partnered with members of the Top 3 organization for the ceremony. (U.S. Air Force photo/Senior Airman Apryl Hall)