A TALON robot searches for contaminants in a simulated Chemical, Biological, Radiological and Nuclear Defense scenario at Range 051 at Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., April 23, 2014. Explosive Ordnance Disposal Supervisor Course conducts advanced training in procedures concerning possible pollutants. (U.S. Marine Corps photo by Lance Cpl. Rebecca Floto/USMC MAGTAFTC HQBN Combat Camera/Released)