Senior Airman Christine Yarbrough, 28th Comptroller Squadron financial analyst, and other Airman Leadership School students from Class 15-3 review homework at Ellsworth Air Force Base, S.D., Jan. 29, 2015. During ALS, Airmen participate in discussions ranging from interpersonal communications and diversity within the Air Force to performing uniform inspections and marching in formation. (U.S. Air Force photo by Senior Airman Hailey R. Staker/Released)