Airmen prepare for the 28th Security Forces Squadron Combat Arms Training and Maintenance rifle course during pre-deployment training on Ellsworth Air Force Base, S.D., Jan. 9, 2012. Airmen practice with both live 5.56 mm ammunition and 5.56 mm dummy rounds as a way to increase their proficiency and accuracy during the firing exercise. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)