U.S. Air Force Airmen sing the Air Force song after their Airman Leadership School Graduation at Dyess Air Force Base, Texas, June 22, 2017. ALS is an approximately five week-long Air Force program designed to develop Airmen into effective front-line supervisors. It is the first professional military education that enlisted Air Force members encounter. ALS focuses on developing leadership abilities as well as effective communication. (U.S. Air Force photo by Airman 1st Class Emily Copeland)