Petty Officer 1st Class Will Crampton, a first class navy diver with 3rd Reconnaissance Battalion, III Marine Expeditionary Force, monitors Marines inside a Standard Navy Double Lock Hyperbaric Recompression Chamber at Camp Schwab, Okinawa, Japan, Jan. 9, 2019. Crampton observed the Marines to ensure their safety while in a SNDLRCS during a training scenario to simulate the pressure felt when diving up to 60 feet in order to enhance combat readiness. - Petty Officer 1st Class Will Crampton, a first class navy diver with 3rd Reconnaissance Battalion, III Marine Expeditionary Force, monitors Marines inside a Standard Navy Double Lock Hyperbaric Recompression Chamber at Camp Schwab, Okinawa, Japan, Jan. 9, 2019. Crampton observed the Marines to ensure their safety while in a SNDLRCS during a training scenario to simulate the pressure felt when diving up to 60 feet in order to enhance combat readiness.