Goof at about 36 minutes in [spoiler]
When Hagan is talking to Jeremy on the phone - at about 36 minutes in,
he is threatening to kill his friends and reading their names
off the screen of the ATG in front of him.
HOWEVER, in a closer shot if you look at the lenses of Hagan's glasses,
you will see the reflection of the screen with Windows' LOGIN screen on it!!
2 screenshots: http://imgur.com/a/i8bJZ