The Department of Defense released three videos on Monday that shows “unidentified aerial phenomena.”

The videos have circulated online for a while, with many focused on what appears to be unidentified flying objects moving quickly, and in ways unlike any known aircraft. The DOD called these “unauthorized releases in 2007 and 2017.”

One video, titled “FLIR”, was recorded from aircraft based on the USS Nimitz in 2004. The carrier is now homed out of Bremerton.

The two other videos, “GIMBAL” and “GOFAST” are from 2015, the Navy said.

“The aerial phenomena observed in the videos remain characterized as ‘unidentified’,” a Department of Defense statement said.

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