A Fire Sprinkler in Action....Most people have never seen a sprinkler go off and snuff out a fire.
My nephew is a fireman in Maryland, who works in the UL testing facility of the Maryland Fire & Rescue Institute and he lit up a fire for me in the lab.
I watched oil-fed flames quickly blossom and start crawling across the ceiling and then - poof - the sprinkler kicked in when a pre-set temperature was reached and the fire was stopped cold. Impressive.
He's a good fireman and a great instructor to others. He set up a traveling exhibit for County Fairs where the public could look into a typical motel room, watch drapes catch fire and see a sprinkler quickly douse the flames.
Hopefully THAT is the only time someone sees that scary situation!
(Click on photo for details.)