CNN  —  As servicemen aboard the US Navy aircraft carrier dumped millions of dollars of military hardware into the South China Sea, the commander chose not to watch. Capt. Larry Chambers knew his order to push helicopters off the flight deck of the USS Midway could cost him his military career, but it was a chance he was willing to take. Above his head, a South Vietnamese air force major, Buang-Ly, was circling the carrier in a tiny airplane with his wife and five children aboard and needed