A US Navy helicopter, a CH-53H Super Stallion, went down in the Atlantic Ocean Wednesday, 12 miles off the coast of Norfolk, Virginia. . In search and rescue operations, three crewmen were saved, one died and a fifth is missing. At the eastern seaboard of the Atlantic, another US military helicopter crashed on the same day, flying on a training exercise from a base on in northern Norfolk in Britain. The four people aboard were reported not to have survived.