Helicopter downwash blows away spectators.
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Previously:
https://www.homemadetools.net/forum/...946#post198757
https://www.homemadetools.net/forum/...568#post170295
https://www.homemadetools.net/forum/...466#post154831
https://www.homemadetools.net/forum/...200#post145824
https://www.homemadetools.net/forum/...178#post149795
