A sailor originally from Utah was missing after falling from an aircraft carrier off the east coast of Japan.
Airman Jason J. Doyle, 19, of Omaha, Neb., and previously of Sunset, Utah, fell from the USS Kitty Hawk about 4:49 p.m. Saturday.
Search-and-rescue efforts began immediately and are to continue until Wednesday if necessary, Navy officials said. As of Sunday night, Doyle had not been found.
Doyle's aunt, Louise Weilenmann of Salt Lake City, said the family was notified by the Navy on Saturday evening.
"Everybody has come together. We're just on standby hoping for the best," Weilenmann said.
Navy officials told the family that a person can survive in the water for about three days. Search crews will continue looking for Doyle until about Wednesday, in spite of a typhoon that was forecast to move into the area, Weilenmann said.
Doyle was assigned to Electronic Attack Squadron 136, which flies EA-6B Prowler electronic attack aircraft.
He fell into the water while the ship was conducting routine flight operations, the Navy said.