Lowfat.
They maybe going to help someone in need, but a friend of mine works for the police, and while transiting across London at night en-route a job they fly as high as ATC allow to reduce noise? So there is NO excuse for transiting on a gin clear night (or day, for instance on weekends when the family is sitting out in the peaceful garden on a sunny day)!!! for these crews to p@ss off people on the ground?
B.