How did Pam catch Michael in "Goodbye, Michael"?

So we see Michael going through the airport, passing security and all, and as he's walking to the gate, Pam runs up to him and says her goodbye.

How did pam get to where he was? This was 10 years after 9/11, so letting non-ticket holders into the terminal section was long gone. Even the camera crew wasn't allowed to follow him in.

It's kind of weird to think the writers would just gloss over something that had become so common to get this ending. (I think it's a great episode, but this is the first thing I thought when Pam ran up.)