U.S. Army Staff Sgt. Hector Reyes, 3rd Military Police Detachment military working dog handler, and Sarik, Fort Eustis MWD, participate in a demonstration during a 50th Vietnam War Commemoration at Fort Eustis, Va., May 16, 2015. Reyes played a “bad guy” to show how the MWDs take an assailant down. (U.S. Air Force photo by Senior Airman Kimberly Nagle/Released)