No sonic boom. Two USAF T-33 jet fighters that were sent into the Bentwaters area where UREs were noted return to base after failing to see anything interesting despite vectoring from Bentwaters radar station. Lakenheath requests interceptor aircraft from Waterbeach RAF station. SW of Lakenheath. V-1 pilot sees radar target but fails to see target visually.
Pilot reports loss of radar contact.
Pilot begins evasive maneuvers to shake object, but is unsuccessful. Pilot heads back to base. Estimated speed is 600 mph. A fourth URE proposed by Thayer is probably the third one reported twice. I will discuss the UREs individually below.