According to various sources, on 10th December 1963, 2 RAF personnel observed a strange domed object fall behind a hanger at RAF Cosford, Wolverhampton, England.
The 2 men then stated that the object swept the airfield with a strange green beam. However, when they returned with help, the object gone.
The 2 men were then allegedly subjected to a rigorous interrogation, and the events covered up.
A couple of days later a very large transport plane landed, which was extremely unusual for this base, and was loaded up with a large hidden object.