"I'm sure many forum members could tell you what they were doing, but they'd have to kill you afterwards.
Just keep an eye out of your window for black gunships in the sky, or black Omegas on your driveway."
And there I was thinking it was the heavily NOTAMed and local press-released Exercise Hawser Link.
http://ukga.com/airfield/coningsby/notam
You military lot love to sound all mysterious