Parker is clearly distressed and states that whatever took Brett is big!

 

The captain asks if they are sure it took him into the air shafts.

 

"Disappeared into one of the cooling ducts" Ripley states.

 

Dallas has an idea.....

 

The air shafts lead up to and go into the main airlock.  If the crew could drive the alien into the airlock somehow, they could "zap it into outer space".

 

Lambert asks "Who gets to go into the vent?"

 

Ripley volunteers, but Dallas makes it clear that he is the one that gets to crawl through the dark passages of the ventilation system.

 

But first he has a few questions for Mother.

 

But the answers don't help much.

 

 

He has one final question.

 

He knows he wont get an answer to this question, but asks it anyway.

 

Dallas wonders if he is going to come through this alive.

 

Ash and Ripley watch the airlock.

 

Parker and Lambert keep an eye on the maintenance opening.

 

Dallas is in the vent.

 

He instructs Ripley to close all the hatches behind him and continues on in the dark.

 

Soon Lambert sees a second blip on the tracker and tells Dallas the alien is somewhere around the third junction.

 

He gets moving to a position where he can drive the creature to the airlock.

 

Lambert loses Dallas's signal and tells him to hold his position a moment.

 

He finds a substance that is not produced by a part of the ship, It must be from the alien, it has been here.

 

He's had enough now and wants to get out, he asks which way to go.

 

Lambert sees the second blip moving right towards Dallas.

 

She tells him to get out of there. "Move Dallas!!!"

 

He goes down the ladder.

 

Looks to the right.....

 

and to the left.

 

Ripley calls Dallas but gets no response.  They know what happened.