This is Battlefield 4, Halo, and Call of Duty all linked together!
Check out the posture of the guy waiting around the corner. How about the guy who takes a tumble! And what about the fact that the dude carrying three large drinks didn't spill anything!
You know for a fact that when you get your drink carrier, you always end up spilling it! This guy runs down steps while getting shot at and doesn't spill a sip.
There's a theory going around that this is a fake shooting. Either way, glad no one was injured, and first and foremost - the shooting video is awesome.