[Cayde is right about which direction to go, and Jess starts to follow, stops in her tracks when he mentions aliens and gun turrets, before shaking herself and jogging to catch up.]
There's an alien down here?
[She's assuming he means "not one of our aliens" because otherwise it wouldn't be worth mentioning.]
and who's fault is that
There's an alien down here?
[She's assuming he means "not one of our aliens" because otherwise it wouldn't be worth mentioning.]