[Karsus]

If it is an insect, what type of insect is it? And why couldn't the FBI id it as such?

[ABE]

It could be any kind of insect.

Typical video is 30 frames/second. Most insects beating wings can far outpace that, so what your seeing is the distance the bug flew in 1/30th sec (the striaght line) and the two sets of "fins" are two strokes of the wings.

At least that's my guess.

[mikegi]

See thchronic's posts. Look, there are no space aliens, ancient astronauts, psychics, dimensional doorways, or Easter Bunnies. The X-Files was not a documentary.

[dalereed]

"And why couldn't the fBI id it as such?"

A Sheriff friend of mine when asked about the abilities of the FBI said:

The FBI couldn’t follow a menstruating elephant in a snow bank!