Now tell me something. Were you putting on that 'face' or were you really that tired? Methinks the former due to the fact that (a) your job must require you all to have an inbuilt mechanism to deal with the trauma that your are inevitably exposed to so frequently and (b) the ability to maintain a sense of humour at most times - enough to care anyway. I'm sure it's a complete coincidence but I saw two separate ambulance crews within ten minutes today all having an absolute laugh. The first ambulance I saw overtook another at quite high speed and obviously thought it was hilarious. The others looked a bit bemused as they were in a white ambulance. The over-takers were in a dayglo yellow/green thing. I guess there was a bit of ambulance paramedic pecking order going down at that particular point. And then the second one was clearly an emergency - siren noise etc heading rather sharpish in the direction of my local (Solzhenitsyn-style) hospital both laughing their heads off in the front. Glorious.