Submitted Photo Airmen from the 891st Missile Security Forces Squadron (891MSFS) load simulation rounds into magazines at Camp Ripley Training Center, Minn., Thursday, Aug. 28. Simulation rounds were used by defenders during their field training exercise, the culminating event for OPERATION Valhalla Strike that tests 891MSFS defenders on all they trained for throughout the week.

Submitted Photo Airmen from the 891st Missile Security Forces Squadron participate in a field training exercise at Camp Ripley Training Center, Minn., Thursday, Aug. 28. U.S. Air Force photos by Senior Airman Kendra A. Ransum.