BOMB SEARCH A U.S. Air Force working dog, Tosca, searches for homemade explosives during a patrol to a village in the the Mizan district, Afghanistan, Oct. 20, 2011. Tosca's handler is assigned to Provincial Reconstruction Team Zabul, which is conducting civil-military operations in the province to extend the reach and legitimacy of the Afghan government. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 638242-K-QDL34-216.jpg Photo Gallery