Military working dog Markey viciously charges forward just before Staff Sgt. Jason Albrecht, a 20th Security Forces Squadron senior military working dog handler, lets him off of his leash during suspect pursuit training July 13, 2011, at Shaw Air Force Base, S.C. The 20th SFS MWD trainers work hard to train and prepare dogs, like Markey, for real world situations, such as drug raids, patrols and other specialized mission functions for the Department of Defense and government agencies. (U.S. Air Force photo/Senior Airman Kenny Holston)