Petty Officer 1st Class Ryan Rigdon, assigned to Explosive Ordinance Disposal Mobile Unit 11, Det. Fallon, operates a PackBot explosive detecting robot during explosive handling training at U.S. Coast Guard Station Quillayute River, Wash. during the Homeland Defense Interoperability Exercise. Navy explosive ordnance disposal technicians and divers from the Northwest region met with U.S. Coast Guardsmen in La Push, Wash. for training focusing on identifying various kinds of explosives and handling diving medical emergencies.