Air Force Senior Airman Jared Basham rigs a rope to open a door during the Raven's Challenge explosive ordnance disposal exercise at Camp Pendleton, Calif., Aug. 2, 2017. Raven's Challenge is an Army-funded exercise led by the Bureau of Alcohol, Tobacco, Firearms and Explosives, with support and participation from multiple federal, state and local agencies. DoD photo by EJ Hersom