Hudson: [reading a motion detector] I got signals. I got readings, in front and behind.
Frost: Where, man? I don't see shit.
Hicks: He's right. There's nothin' back here.
Hudson: Look, I'm telling ya, there's somethin' movin' and it ain't us! Tracker's off scale, man. They're all around us, man. Jesus!
Dietrich: [looking through an infra-red scope, walks right past an Alien] Maybe they don't show up on infra red at all.
[the Alien pounces on her and drags her up to the ceiling]