Reminds me: while a student in the 1970s in Bishops Stortford, I played the part of a casualty in a mock aircrash at Stansted airport. The emergency services did not know that it was only an exercise until they got to the scene, and then everyone relaxed. I wore a tag that said I had a broken back, and I lay in the wet November leaf mould for about 20 minutes. After that, I was put in an ambulance, and off we went to Harlow - the siren going neenaw, and the ambulancemen cursing because my "broken back" was travelling with a "fractured skull" in the other bunk. Apparently, one should have had a fast (if bumpy) ride to hospital, and the other (the broken back, I guess) should have had a smooth ride. I was acting the part as if an Oscar depended upon it and spoke only when, at the hospital, the medical staff were writing down a description of me-as-casualty: the doctor made as if to lift my eyelids manually, to see what colour my eyes are, and I very quickly said, "brown". Made a change from going to the laundrette, or whatever, but not terribly confidence-inspiring. I hope that the authorities learned a lot from that exercise. Rachel in SE7