Tremonton, Utah, UFO Color Film of July 2, 1952:

When a Warrant Officer and Navy photographer named Delbert C. Newhouse and his wife were driving along a road seven miles from Tremonton and spotted a formation of brilliant metallic looking disc shaped objects, clear against a bright blue sky, you have an interesting sighting report by a qualified, reliable and educated observer.

When this Officer has the chance to use a 16mm camera and telephoto lens to shoot forty feet of film of the objects maneuvering, and submits it to Project Bluebook for evaluation, and when it is studied for three months at the Photo Reconnaissance Laboratory of the Air Force Intelligence, and when the conclusion convince the head of project Bluebook that it does show unearthly flying machines, you have more than a good sighting report.

When the Bluebook team feels it is evidence of the reality of UFOs as extraterrestrial craft, and feels a scientific team should be gathered to look at the evidence, you may hope that this evidence will be made public. But if this scientific panel is set up by the CIA, then the film becomes merely evidence of... birds.

Here is the fully documented story.