Senior Airman Nathan Warren, 28th Security Forces Squadron combat arms instructor, tallies up the score for an Airman during a 28th SFS Combat Arms Training and Maintenance rifle course on Ellsworth Air Force Base, S.D., Jan. 9, 2012. The scores are added up to determine an Airman’s accuracy and proficiency on the weapon system, and meet their deployment qualification requirements. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)