A search is underway for the twelve crew members of two Marine helicopters that collided overnight off the Hawaiian island of Oahu. John Blackstone reports .
Two Marine CH-53 helicopters have collided off the Hawaiian island of Oahu just before midnight on Thursday, according to the U.S. coast guard. Each aircraft .
Two helicopters from the Marine Corps Base in Hawaii have reportedly collided off the coast of Oahu with twelve people on board. The US Coast Guard is .
Two Marine helicopters collided off the coasts of the Hawaiian island of Oahu late Thursday night during in a nighttime training exercise. Tags: 12 missing after 2 .
