U.S. Air Force Staff Sgt. Sean McKenna, 355th Security Forces Squadron Military Working Dog handler, bonds with Mushe, 355th SFS MWD, during obedience training at Davis-Monthan Air Force Base, Ariz., Jan. 23, 2014. Due to their upcoming joint deployment, McKenna and Mushe are training together to strengthen the trust in their relationship. (U.S. Air Force photo by Senior Airman Camilla Elizeu/Released)