U.S. Air Force Airmen from the 633rd Logistics Readiness Squadron prepare to fire during a simulated live-fire training session at Fort Eustis, Va., Oct. 28, 2013. The annual training is part of a new hands-on program for 633rd LRS Airmen, offering combat training in a controlled environment. (U.S. Air Force photo by Staff Sgt. Ciara Wymbs/Released)

M-16s are stacked against sandbags prior to a training session at Fort Eustis, Va., Oct. 28, 2013. The Engagement Skills Trainer 2000 is a virtual, computer-based trainer that uses modified, retrofitted weapons to provide initial sustainment and advanced marksmanship with stationary and moving targets and reactionary-firing training. (U.S. Air Force photo by Staff Sgt. Ciara Wymbs/Released)

U.S. Air Force Airmen from the 633rd Logistics Readiness Squadron observe Curt Storer, U.S. Army Support Training Division computer operator, demonstrate how to aim during simulated M-16 live-fire training at Fort Eustis, Va., Oct. 28, 2013. The training keeps Airmen qualified for deployments which may require them to carry an M-16.(U.S. Air Force photo by Staff Sgt. Ciara Wymbs/Released)

U.S. Air Force Senior Airman Alexandrea Smith, 633rd Logistics Readiness Squadron vehicle operator, prepares to fire an M-16 during a virtual live-fire training session at Fort Eustis, Va., Oct. 28, 2013. The simulator offers immediate and cost-effective training, allowing the Airmen to be qualified for deployments. (U.S. Air Force photo by Staff Sgt. Ciara Wymbs/Released)