A U.S. Soldier assigned to the 202nd Explosive Ordnance Disposal Company, 201st Regional Support Group, Alabama Army National Guard, looks inside a residential trailer while a local law enforcement officer provides backup in a residential-search scenario during exercise Ravens Challenge VIII at Redstone Arsenal, Alabama, July 1, 2014. Ravens Challenge is a national-level interoperability exercise with multiple state and federal agencies hosted by the Bureau of Alcohol, Tobacco and Firearms. ......