The guy shooting into the air is not doing it just for fun
Explosive is not meant to kill everyone inside the buss. It looks like it is gonna blow the bus into small pieces, but it is really not that bad if you have proper protective equipment.
You should note, that the guy with the stick has a long gun, which he takes and points to the bus after explosion.
Btw; who knows what firearm there is at 1:10 ?![]()