120808-F-MG591-001
A Military Working Dog plays with Staff Sgt. Stephanie Pecovsky, 11 SFG MWD trainer, while taking a break during a ruck march Aug. 8, 2012, at Joint Base Andrews, Md. The airmen are getting the MWD acclimated to walking long distances and still performing their duties, before they are deployed downrange.(U.S. Air Force photo by Staff Sgt. Perry Aston/Released)