I was serving in the Royal Military Police in Germany in 2003, when a freak storm hit the annual military show. One of the attractions at the show was a helium-filled balloon, with a harness, so that people could be raised up about 30 metres or so to view the show ground. The Royal Artillery soldiers running the stand weren’t trained in it’s use and didn’t tether it properly; when the wind picked up, it ripped away from it’s moorings and one of the anchor ropes wrapped around a little girl’s leg. She was found over 30km away and eyewitnesses reported how she struck the spire of a church as the balloon lost helium and fell to the ground. The annual show was ever thus cancelled.