As many as nine people are believed to be missing after a Coast Guard plane collided with a military helicopter off the Southern California coast.
The crash was reported about 15 miles east of San Clemente Island.
A Federal Aviation Administration spokesman says a pilot reported seeing a fireball near where the crash site is believed to be.
Ian Gregor says seven were on board the Coast Guard plane and two were on the Marine Corps chopper. Gregor says it appears the crash was between a Marine Corps AH-1 Cobra and a Coast Guard C-130 transport plane.
A search and rescue mission is under way.