1. Any significant airshow attracts a large number of people around the wider perimeter/area, either trying to get a better vantage point for their filming, or to avoid the ticket price. They often position themselves deliberately under, or beyond, the display line to maximise the thrill; experience; photo location etc. . . and RISK!
Sorry Zorab64, these were innocent people completely uninvolved with the airshow going about their business. Totally unacceptable that they died in such a manner.