UK V USA

Like my previous post, there are many stories like the USAF sending an aircraft over to take photos over London and they sent them to us saying we did`nt pick the aircraft up, but we sent photos of them (by a canberra I think) taking photos of us. I think this was a RADAR test or something.

Was`nt there a story of a Vulcan doing something similar in the USA?

Thanks

colin