Because after all, the building she just escaped from is towering above her, many stories full of Fed creeps, and all the alarms are going off. Most of the windows can't be opened, all they can do is look out. But there are people on the roof. Mostly the roof is a forest of antennas. If it's a forest, these guys are the creepy little gnomes who live in the trees. They are ready for action, they have their sunglasses on, they have weapons, they're all looking at her.