Of course they had to deal with hostiles. Of course. What would ever make her think that they were in the clear? She took cover right next to Donatello, noticing as they continued to fire into the room. They only really had the one obvious doorway, and even then, Gwen didn't particularly want to surrender their location to them. They needed to get everything up and running as soon as possible.

She looked up as well, noticing the ventilation. It would be easy for her to make it up there. All she needed would be the layout to cooperate as well.

"Hey, think you can hold out over here for? I'm gonna look to get the drop on them."

As in, literally.