U.S. Air Force Staff Sgt. Joseph Serrano, 100th Security Forces Squadron Military Working Dog trainer from San Fernando, Calif., demonstrates the power, obedience and ability of MWD Vvonya to civilians from the 100th LRS during a Civilian Appreciation Day tour Feb. 27, 2015, on RAF Mildenhall, England. Serrano explained how the dogs are used as a deterrent during patrols and how the handler gives a verbal warning before sending the dog to restrain the perpetrator. (U.S. Air Force photo by Gina Randall/Released)