I posted this a while back on my twitter but i'm guessing not everyone has heard this story. Kristen told us this story on Lopez Tonight, though it DIDN'T make it into the actual show. Just thought i would share it with you all :)
When Kristen was flying to do all the New York promotion from her LA a fan walked from coach to first class, where Kristen was sitting to say hi but her Security guard John told the girl no. Kristen then told John that it was cool and he let her go say hi to Kristen. John just stayed really close by making sure Kristen was okay and nothing bad would happen(since that's his job). She ended up talking to the fan for about 5 minutes. The guy sitting behind Kristen turned to John and asked him why he was standing there and John told him that it was his job to take care of Kristen. This guy went on to tell John that if he wasn't hovering all over her, he wouldn't have to take care of her...John just ignored him and stayed there.
So there was a bit of drama already established with John and the guy sitting behind Kristen.
After the fan left Kristen went to talk out loud to someone next to her about how awesome it was to have an actual conversation with a REAL FAN! and that the fan didn't even ask her for a picture or autograph, she just wanted to talk to her :) When Kristen mentioned talking to a REAL FAN the guy behind her turned around and gave what Kristen described as "A LOOK" a bad one. Kristen kept on talking said something along the lines "I'm talking to loud, this is stupid." the guy behind her turns around and looks at her and asks "Did you just call me STUPID?!" Kristen got nervous and started mumbling apologies to him and saying "no i'm sorry i'm saying i'm stupid" then this guy goes on and tells her "I am an Air Marshall you do not speak to me like that!"
in case you don't know an Air Marshall can ban you from flying...anywhere so she just turned around to her seat and didn't speak to the guy again lol
She said it was really awkward. The way she told us this story was really funny! with all her hand motions and everything! i just wish they would have aired this story.