Members of the Pearl-Harbor-based Mobile Diving and Salvage Unit One 1 "Heavy Lifters" are filmed during a shoot for the Discovery Channel's, "The Real NCIS." The crew filmed scenes throughout Pearl Harbor for an upcoming show. MDSU-1 provides combat ready, expeditionary, rapidly deployable Mobile Diving and Salvage Detachments to conduct harbor clearance, salvage, underwater search and recovery, and under water emergency repairs in any environment.