 Four surface vessels, submarines and , and a number of aircraft from Honolulu conducted the search on the first day, and military authorities were asked to prepare additional planes and ships to join the search at dawn.The searchers were unable to locate the missing flight; authorities held on to the hope that the flight's radio was just malfunctioning.To address the possibility that the missing flight's navigation equipment had failed, the Coast Guard ordered all ships at Pearl Harbor to shine their lights into the sky, so that they could be seen by the flight and used as beacons if needed.