I used to use a cutting torch at a shipyard.
I saw video a few days ago and the first thing I thought was he was way too close.
Idiot.

Roger that, Buck.
Them things are like bombs.

For God's sake it is Oxygen.....what does fire need to burn?? That O2 tank was a huge waste of time and money, they blew up about $400. I use an oxyacetylene torch for brazing, and the O2 always runs out first even with a J-hook.................so I started using what is called an acetylene turbo torch, no need for O2 when brazing pretty good up to 3/4" copper using silfos 15%. Heating takes a little longer but well worth the savings.

Don't shoot at steel plates either.

https://www.facebook.com/watch/?ref=saved&v=2156784451295044

Is it bleeding?

No. Just knocked his ear phones off.