Warrior mindset: Defending lives in close quarters
Capt. Andrew Callanan, a U.S. Army Reserve military police officer with the 535th Military Police Battalion, of Cary, North Carolina, poses for a portrait during the Active Shooter Threat Response Training taught at an Army Reserve installation in Nashville, Tennessee, on Sept. 29. This image was digitally manipulated in post-production. (U.S. Army Reserve photo by Master Sgt. Michel Sauret)