Staff Sgt. Ulises Gonzalez, 455th Expeditionary Security Forces Group dog trainer, practices some "patrol training" with Mayo, a military working dog, at Bagram Air Field, Afghanistan, Dec. 21, 2012. The training demonstrates the MWD's ability to attack, on command, any perpetrator that is being uncooperative or attempting to cause harm towards property or personnel.  (U.S. Air Force photo/Senior Airman Chris Willis)
Staff Sgt. Christopher Willis
Taken on 21 December 2012
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