When Tucker Burns walks through the endless corridor in the archives, he looks at strange samples on both sides, put away on shelves. At one point we see a sample on the right side, labeled F-2 but with the writing reversed: obviously a "left side" shot flipped to the right side to make it look like Tucker was looking at both side of the corridor, while they were filming only one.
Sal: Hey, I think I got their web site.
Tucker: Aliens have a web site?
Grace: How do you think the Internet got started--Al Gore?
Donald: What do you think - alien?
Wes: Yeah, definately ruled out genetic mutant.
Donald: Too far from Jersey?
Tucker: Are all these people applying for the same job?
Woman: Why do you want to know? Who are you with? Were you followed? I was followed.