Revealing mistake: When Booth shoots the second hunter, you can see he that aims the gun at the mans stomach but the exit wound appears to be on the left side of his back, further up from where he aimed. (01:10:50)
Revealing mistake: When Frank is hanging off the roof, there is a pipe from which he tries to cling to. The first time we see it there is a white line where it will break. The next time we see it (just before it breaks) the line has been coloured in.
Answer: Frank had reviewed and was familiar with the list of the attendees since he was concerned about an attempt, and when he looked at the faxed list of new bank accounts, the name Carney jumped out at him.
jimba