HONOLULU - Sgt. Steve A. Haberkorn, a Marine with Wounded Warrior Battalion West — Detachment Hawaii, jumps off a boat while being watched by a scuba instructor during a day of scuba diving at Hawaii Kai, March 17. Researchers at Johns Hopkins University began a study in 2011 about the effects of scuba diving on patients with spinal injuries. (U.S. Marine Corps photo by Lance Cpl. Jacob D. Barber) - HONOLULU - Sgt. Steve A. Haberkorn, a Marine with Wounded Warrior Battalion West — Detachment Hawaii, jumps off a boat while being watched by a scuba instructor during a day of scuba diving at Hawaii Kai, March 17. Researchers at Johns Hopkins University began a study in 2011 about the effects of scuba diving on patients with spinal injuries. (U.S. Marine Corps photo by Lance Cpl. Jacob D. Barber)