The Pentagon says it's trying to figure out whether a missile was launched off the coast of southern California and who might have launched it.
Spokesmen for the Navy, Air Force, Defense Department and North American Aerospace Defense Command say they are looking into a video posted on the website of Southern California television station KFMB.
The video appears to show a rocket or some other object shooting up into the sky and leaving a large contrail over the Pacific Ocean.
Pentagon spokesman Col. Dave Lapan said Tuesday that officials can't confirm that there was a launch and if there was, by whom. He says officials are talking to the Air Force, Navy and NORAD as well as civilian authorities who control and monitor air space.