Senior Airman Daniel Sirias, 28th Bomb Wing knowledge operations manager, practices drill commands with fellow Airmen during Airman Leadership School at Ellsworth Air Force Base, S.D., Nov. 2, 2012. ALS is an education program that prepares Airmen for positions of greater responsibility and covers various topics including warfare leadership, international security studies, communication and military professionalism. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)