Former military working dog Sgt. 1st Class Gabe and his his handler (now owner) Sgt. 1st Class Charles Shuck shake on it between explosives detection missions. Gabe was the most successful detection dog in Iraq in 2006-2007, and was recently named the American Humane Associationâs 2012 Military Hero Dog. Now heâs competing to be the 2012 Hero Dog. (Photo courtesy of Sgt. 1st Class Charles Shuck)