Tech. Sgt. James Colvin, the 60th Medical Group's Aerospace Physiology flight chief, moves through a pre-dive checklist at the hyperbaric chamber console. (U.S. Air Force Photo/Ken Wright)
Tech. Sgt. James Colvin, the 60th Medical Group's Aerospace Physiology flight chief, moves through a pre-dive checklist at the hyperbaric chamber console. (U.S. Air Force Photo/Ken Wright)