UFO Spotted in Bruce Lee Doc? (Video)

A video on YouTube claims to have discovered a UFO flying over Hong Kong harbor during a brief segment in the History Channel documentary, How Bruce Lee Changed The World.

In the segment, replayed several times and slowed to half speed, an unidentified flying object zig zags past the camera in the stock aerial footage of the Hong Kong harbor opera house, shot by a passing helicopter.

As the object flies erratically through the air, it seems to trail some exhaust. It's definitely not a bird, but it's not easy to make out exactly what it could be.

Adding the words Bruce Lee to any headline is bound to get some attention, but there seems to be something mysterious about the alleged UFO in the scene.

An enlargement of the object reveals it doesn't look like any known aircraft. It has no wings, no lights no rotors or engines.

So, what is it?

Here's the video: