U.S. Army Spc. David Walls, of Warren, Mich., Mine Detection Dog Handler, 49th Engineer Detachment, oversees Sergeant Homer, a mine detection dog, as he performs a mine-proofing sweep at the Russian Grain Silo Combat Outpost, Kandahar, Afghanistan. The COP is the intended site of a 10 mega-watt power plant that will provide electricity to the western side of Kandahar. Walls and Homer are deployed to Kandahar Air Field, Afghanistan. (ISAF photo by TSgt Samuel Padilla/released)