An American K-9 Detection Services (AMK9) working dog chases a U.S. Soldier during attack training at Camp Nathan Smith in the Kandahar Province, Afghanistan, April 9, 2013. Soldiers from the 1st Brigade, 1st Armored Division volunteered to wear the bite suits during the training. (U.S. Army photo by Sgt. 1st Class Joseph Wilbanks/Released)