Chief Petty Officer Robert Vincent, gunner's mate, assigned to Explosive Ordnance Disposal Training and Evaluation Unit 1 demonstrates how to check the firing block on the M-9 service pistol to midshipman during the small arms familiarization and qualification portion of the Explosive Ordnance Disposal Summer Cruise at Naval Air Station North Island July 5, 2011. The summer cruise is used to identify potential EOD officers from Reserve Officer Training Corps and the United States Naval Academy the summer prior to their senior year. Explosive ordnance disposal technicians are trained to operate in all environments and locate, identify, render safe, recover, and dispose of explosive ordnance, including chemical, biological, radiological and nuclear.