Cait had a finger to her lips before she really thought about it, a soft ssshing nose. Mutant terrorists weren't typically known for being delicate, but in spite of her outgoing personality and seemingly endless energy, Mercury was first and foremost a thief, and it was those instincts which took over: you didn't go into a place with guns blazing unless you knew exactly what you were up against. In every other case, silence was best, surveying the scene, only showing yourself when you were ready to take on the world.
And so she was crouched comfortably, but low to the ground -- the only reason she wasn't a puddle was that people got freaked out by the whole puddle-is-person thing. Except possibly McKenzie, but McKenzie was messed in the head, so he didn't really count.
"Some kinda clue about what we're gettin' ourselves into," Cait replied, voice soft. It didn't help that she was twitcher thana normal, a combination of nerves and an intense desire to pummel something. "They got Cyclops out easy enough, but that doesn't mean these people are pushovers." If a group of them unprepared could nearly kill her, it was reasonable to assume that a concentrated force in their home base was going to be better prepared.
She looked up towards the entrance. "We've been makin' enough noise someone should be hearin' us by now. It'll tell us what's goin' on." And give them someone to kill.