Marc is really good at analyzing photographs and videos and being able to determine if something is an anomaly of the image taken or if it's something that is NOT blocking the image.
As an expert in this area, he knows how to re-create some of these scenarios to prove the anomalies.
He showed examples of the NASA Tether Incident, a recording of the Russian Meteor where a UFO flew out of it and made it explode, and a photo in Cotulla, TX where a security cam caught one frame of a UFO flying across the screen.
He broke these down and showed us how the UFO from the meteor and the Cotulla incident were both camera anomalies.
He then showed some oddball pics like snow on a camera lens, geese flying in formation so far up that they looked like part of a Triangle UFO.
May times over people don't notice something when they snap the pic but later see something anomalous.
The famous Google Earth anomaly was caused by lens flare. This same anomaly was found in Google earth in other places including on the ground!
Credit: ovni-news.blogspot.com