

rocket launchers, including ones that fire rocket propelled grenades, are a tube that is open on both ends. if they were not, the force of the rocket firing would send a man flying backwards. because of this, the rocket exhaust comes out the back end in a concussive wave that will kill anyone behind the person firing the rocket.
what this idiot just did was break every bone in his torso and turn his brain to liquid. fortunately for him, his pain was over very quickly and he probably was not conscious of anything after squeezing the trigger.
Welcome to the glorious Russian Empire, comrade.