Hudson : Movement. Signal's clean. Range twenty meters. Ripley : They found a way in, something we missed. Hicks : We didn't miss anything. Hudson : 17 meters. Ripley : Something under the floor, not in the plans. Hudson : 15 meters. Newt : Ripley. Hicks : Definitely inside the barricades. Hudson : 13 meters. Ripley : That's right outside the door! Hicks, Vasquez, get back! Hudson : Man, this is a big ****ing signal! Hicks : How are you doing, Vasquez? Talk to me! Vasquez : [welding the door shut] Almost there. Hicks : That's it! Keep it up! Hudson : 12 meters. 11, 10... Vasquez : They're right on top of us! Hudson : 9 meters. Hicks : Remember: short, controlled bursts. Hudson : 8 meters. 7, 6... Ripley : They can't be. That's inside the room. Hudson : It's reading right, man! Look! Hicks : Well then you're not reading it right! Hudson : 5 meters, man! What the hell?! [Looks up along with the rest as they realize they're in the ceiling] ... Oh shit... oh **** ...

http://www.moviequotedb.com/movies/aliens/quote_1063.html