Thanks guys for all your inputs. Except for a few bruises on the elbow and shin, my friend is ok. He is taking the whole thing ok I think. I guess this is a reminder to all photogs shooting - be aware of your situation when you are shooting.. coz its so easy to get engrossed getting "the shot" that you forget your surroundings. The steps along sg river is really very slippery, even though it looks ok.