"If you're lucky," Farzan says, leading him through the second door of the airlock and hanging up the mask at the rack next to it, "large amounts of pain and convulsions. If you are very unlucky, it'll attack your nervous system and send you into cardiac arrest."

Here you go, Carl, a Marine admitted that something may hurt. You may feel free to be impressed!

Fortunately for them both, the barracks is mostly quiet at this time in the afternoon, and Farzan just nods and says 'hey there' to a few people (men and women both; usually wearing black armbands with beadwork, with hair everything from crew-cuts to dreadlocks; the mixture of dress that Carl saw out in the base is replicated here, too).

A few more twists and turns, and Farzan swipes his ID card down a lock, and leads Carl into a room. Trudy's room.