Flashing back to Morristown a few years back. The foam system was set off by spraying a wash during a helo wash on an unshielded contact
switch for the foan system. Yes, there were people inside..they all got out ok. The foam climbed 30 foot to the hangar roof <good design> then
managed to short out the deadman switch for the hangar doors allowing the foam to spread across the ramp.
And no, this isn't snow <some local yokels apparently thought we had a very very localized blizzard at the time

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