A fire security contractor accidentally set off a new fire suppression system inside an Oklahoma National Guard hangar Tuesday, whic buried 10 Black Hawk helicopters in fire-suppressant foam within seconds.
The force of the foam was strong enough to force open the hangar doors and spill out onto the outside flight line, according to The Washington Post, affecting four copters outside after dousing six housed inside the hangar.
None of the military UH-60s — which measure 65 feet long and 10 feet high — were damaged, and six have already been cleared to fly again.
The second of two videos below shows the hangar filling with foam, while the first shows the runoff outside.
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