"Expert"
A/c 1,000 feet above you, A/c 1,000 feet below you, all wanting to descend. Dangerous? How difficult is this to work out? Are there are incidents in the stacks? level busts? Would a level bust in such a situation be more dangerous than anywhere else? I think this is all fairly obvious, but I'm no expert!
I saw a bit of a programme on Discovery about the Manchester incident. There was a call for smoke hoods, but the CAA didn't act. Just a comment....
------------------
"The Hamster my friend, is blowing in the wind"