IA (Identified Anomaly)

Gigantic Jets are essentially "upward lightning" and the result of strong storms. These jets were located some 150 miles to the north in Missouri and associated with the remnants of Hurricane Erin (2007). This was the first time Gigantic Jets have been recorded over the continental United States. Footage was featured on the TV series “Strange Evidence” (S3E3) and Nasa’s website.

Not strictly "anomalous" but rare.

This is presumed to be sunlight reflecting off the surface of a conventional aircraft.

Sprites captured from a thunderstorm video. Sprites generally occupy only 1 video frame. Note the sky is mostly clear with stars in the background.