150429-N-QA919-100 NAVAL SUPPORT ACTIVITY BAHRAIN (Apr. 29, 2015) - Sailors assigned to Mobile Diving and Salvage Unit One and Explosive Ordnance Disposal Mobile Unit 11 complete surface checks on their diving equipment during a SCUBA supervisor course. The course is intended to train and qualify divers in supervisory roles. (U.S. Navy photo by Mass Communication Specialist 3rd Class Tyler N. Thompson/Released)