By Harry Howard For Mailonline
Published: 09:59 BST, 4 April 2019 | Updated: 09:59 BST, 4 April 2019
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The deadly power of a firefighter's worst nightmare - the backdraft - has been demonstrated in terrifying slow-motion footage.
The danger occurs when there is the sudden reintroduction of oxygen into an enclosed space containing a fire.
Youtubers The Slow Mo Guys demonstrated it by re-creating a house fire - with a violent jet of smoke and flames the result.
This is the moment that Youtubers the Slow Mo Guys set re-create a house fire inside a shipping container to demonstrate the deadly power of a firefighter's worst nightmare - the backdraft. The container is fitted with a Go Pro camera sitting inside flameproof housing
With the help of Travis County fire department, in Texas, they fill a shipping container fitted with windows and doors with a sofa, wooden panelling and a Christmas tree.
A Go Pro camera is placed in the corner of the container inside a fireproof housing.
Outside and in line with the door are wooden markers topped with marshmallows to measure how far the backdraft reaches.
After a few minutes of allowing a fire to develop, firefighters move to cut off oxygen to the space by closing the windows and the top and then the bottom part of the door.
The fire gets so hot that the Go Pro camera stops recording, despite
