DUNKER DIVER A naval aviator swims to the surface after exiting the 9D6 dunker during a training exercise at the Aviation Survival Training Center at Naval Air Station Jacksonville, Jacksonville, Fla., Feb. 10, 2011. The device simulates an aircraft water landing. The Aviation Survival Training Center provides courses for naval aircrew personnel and operates under the aegis of Navy Medicine Support Command. The dunker simulates an aircraft ditching in a body of water and sinking upside-down. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 055984-P-FHE88-362.jpg Photo Gallery