Photo ID is not required to buy a train ticket to New Haven from Grand Central Station (unless you are getting a reduced fare).
At 22:12 Reese opens one button on his suit as he walks down the hallway. At 22:48 after the fight, it is buttoned up again.
While the first day (in present time) of this episode occurs on May 1 (Reese's birthday), the calendar on Reese's mobile phone shows a date of April 24 when he checks his messages.
Trivia: When Carter reads Reese's military personnel file, it can be seen that John's middle name begins with an "H" and his real surname ends with an "S."
Finch: So if I were to speculate as to the reason for your labored breathing, Detective...
Fusco: I lost her.
Finch: That would be it.
Reese: Only one way to deal with guys like this. Guy who hide what they really are until they get home.
Finch: What will you do, Mr. Reese?
Reese: Show 'em what a real monster looks like.
Carter: Do I need to look in the trunk?
Reese: You do what you like. It isn't going to change what I have to do.
Carter: Let me have him, John.
Reese: If I do, he'll get away with it.
Carter: I'll see that he doesn't.
Reese: It won't be up to you. That's my point. there are things you can do, Detective, and things you can't. And that's where I come in.
Music: Revenge (Danger Mouse & Sparklehorse)
Canada: May 3, 2012 on Citytv
Australia: May 14, 2012 on Nine
Turkey: May 17, 2012 on CNBC-e
Germany: December 27, 2012 on RTL
Finland: July 17, 2013 on MTV3