There's an interesting U2 story in the current Air & Space magazine - also on the website at:
Above & Beyond: I Have a Flameout | Military Aviation | Air & Space Magazine
The last time I was at Akrotiri (3-4 years ago) we were assured that the U2's that hadn't been there in previous years definitely weren't there now. A couple of days later the most almighty jet noise had us rushing out of the accommodation early in the morning. Something black appeared to be spiralling upwards, but was almost out of sight. As it can't obviously have been a U know what, I assumed it was some sort of bird scarer...