Keywords: US Navy 080801-N-8421M-033 Navy Diver Senior Chief Daniel Jackson, assigned to Deep Submergence Unit (DSU) is lowered into the water while piloting an atmospheric diving system (ADS) 2000 during the unit's 2nd annual Submarine.jpg en SAN DIEGO Aug 1 2008 Navy Diver Senior Chief Daniel Jackson assigned to Deep Submergence Unit DSU is lowered into the water while piloting an atmospheric diving system ADS 2000 during the unit's 2nd annual Submarine Rescue Day at Naval Air Station North Island DSU is the only operator of this type of ADS system in the world which is capable of safely operating at depths of up to 2000 feet U S Navy photo by Mass Communications Specialist 1st Class David Mercil/Released 2008-08-01 080801-N-8421M-033 Navy http //www navy mil/view_image asp id 62165 U S Navy photo by Mass Communications Specialist 1st Class David Mercil PD-USGov-Military-Navy Naval Air Station North Island in the 2000s Atmospheric diving suits of the United States Navy United States Navy Divers |