U.S. Army Corps of Engineers South Pacific Division commander, Brig. Gen. Mark Toy joins staff at Dugway Proving Ground to view two test facilities at the nation’s designated range for chemical and biological defense testing and countering weapons of mass destruction. Corps crews are updating the Heating Ventilation and Air Conditioning units at the installation’s Combined Chemical Test Facility to keep test agents contained and never reach the outside atmosphere. (U.S. Army photos / Released)