Climbing was something Clint was good at, and good at doing even when kitted out like he was. Once he reached his perch he scanned to find Bucky's chosen vantage point.

Once the countdown had ticked down to zero, he expected the street below to simply be full of zombies, as that was how it had usually happened before, but for the immediate moment there wasn't anything, no movement, and that puzzled him, so he turned, scanning horizons that he could pretend were actually there and not just projected on the walls.

It was when he spotted the incoming horde that he swore, and colorfully as he shifted his stance, because with that many coming in that fast, he was going to have to start with the rifle and work his way down, "Incoming, west side." He called over to Bucky, too startled by the swarm to realize that the same thing was happening at the other end of the street as well.