Unexploded ordnance left on one range in Afghanistan killed 12 civilians in last four years . The U.S. military has been using the site for training and testing since at least 2003. He says rehearsals like this help his troops keep their skills sharp , adding that they 're skills U.S. troops need to keep Afghans safe . U.S. military aware of dangers and says it is creating new safeguards around the area .
Unexploded ordnance left on one range in Afghanistan killed 12 civilians in last four years . The U.S. military has been using the site for training and testing since at least 2003. U.S. military aware of dangers and says it is creating new safeguards around the area .