I watched a wheels up landing of a light twin at Lasham a few years a ago.Since he knew he had a problem and was circling for over an hour to burn off fuel they had plenty of time to prepare. We ended up with two airport fire engines with foam cannons, The local fire engines a and our own fire truck plus four police cars. The pilot made a beautiful belly landing with very little damage (apart from not stopping the engines) and walked calmly away unharmed. At which point someone let fly with a foam cannon and totally buried the aircraft in dirty brown foam. The water in the fire engine had not been changed for ages and had got rusty from the metal tank.