In November 2004 Navy pilots from the USS Nimitz carrier group track and chase a white, oblong object off southern California that they cannot identify.
Contested history
Consensus: Experienced pilots and radar operators reported an object they could not identify. The Navy has never publicly explained it, and the full radar data has not been released.
Sensor artifacts or conventional aircraftDebated
Skeptics such as Mick West argue the released videos are consistent with distant aircraft and camera effects. The pilots' eyewitness accounts are harder to explain this way.
Advanced foreign or secret U.S. technologySpeculation
No public evidence ties the object to any nation's program.
A non-human craftUnsupported
No physical evidence or released sensor data shows this.