[ThunderSleeps]

With "recoilless" weapons like RPGs there is a significant back-blast. You simple cannot fire them indoors. That guy is dead. The concussion within that room burst blood vessels in his lungs and he literally drowned in his own blood within a few minutes. Sadly, he was probably already unconscious from the blast when it happened. The cameraman is lucky he was on the other side of a doorway and was shielded from most of it.

IIRC the Israelis developed a version of an RPG that can be fired from cover in a room. It has basically a water balloon in the back end of the launch tube. The back blast pushes the water out, then the force/concussion is mostly expended misting/vaporizing and pushing against the mass of water. I remember the guy on the arms TV show firing one from inside a cinderblock room, saying something like, well, this would normally kill me but ... here goes...

[USMCPOP]

Back blast ...

https://www.youtube.com/watch?v=ouScnB-F-6k

[Bulwyf]

I was about to say the same thing. There is a reason you turn around and check your backblast prior to firing.

The projectile didn’t explode, it would have a minimum arming distance of 38 meters or so. The backblast got him as you described.