Yeah, either the dude is firing blanks - impotent and highly suspect tactic considering the door was SLOWLY smashed open with a heavy sledge... (I think the BGs inside already know you're coming in at that point)...
OR... the idiot is firing rounds all through a ghetto apartment project ceiliing, floor, ceiling, Russian, floor, Russian... and so on. Glad I don't roll with these mooks.
Either way, those people are alive only because they haven't yet met the BGs who want to kill them. Doesn't appear they're doing much to stay alive when they run into "the one" who pokes 7.62mm holes in their crappy tactics.