I'd support the Air Ambulance, too. My son, a roofer, had a fall from thirty feet(!!!!!!) and the air ambulance was called out. He was EXTREMELY LUCKY to survive. He's a climber, and had been taught how to fall, and landed on his feet, bent his knees, and 'flopped', but broke his thumb badly. His feet were bruised up to the ankles for three weeks - and his knees and back hurt for a long time, but he survived and now has only a thumb scar, and his mobile photos (he took pictures of the injury!!). The air ambulance team couldn't believe that he'd got up and walked around to a neighbour to call 999!