Or you're there and the next thing you know you're just a head rolling across the dirt seeing the rest of your body fall the ground. That Youtuber should feel very lucky that the RPG that exploded didn't do something like that to him.
It seemed like there was a malfunction, which iirc, means you set the weapon down, clear the area, and call EOD to come investigate and dispose of it. That takes too long though. Better to try again cause what's the worst that could happen? Lol
