Grim, 379th Expeditionary Security Forces Squadron military working dog, takes a bite out of Staff Sgt. Tyler Sexton’s, 379th ESFS MWD handler, padded sleeves during a training scenario Sept. 15, 2016, at Al Udeid Air Base, Qatar. Grim is a detection patrol dog. MWDs and their handlers assist fellow security forces members in daily operations to protect the base. (U.S. Air Force photo/Senior Airman Janelle Patiño/Released)