It has been revealed that the U.S. Government ran a program investigating UFOs and trying to determine that they actually are.

The effort, which was run in secret, and sounds exactly like The X-Files, ended in 2012, but some videos of unidentified flying objects has emerged from the program. Including this one.

This video shows two pilots tracking a UFO that moved fast, and pulled off incredible aerial stunts. And to this day no one knows what it is.

The U.S. Government aren’t saying this is aliens, but they are saying they don’t know what it is, which leaves aliens as one possible (and plausible) explanation.