The crew worked very hard to make an 'ATM' sign to cover the Elks Lodge main sign for the big bank exterior shootout scene - however, they failed to cover the four big white, raised letters (ELKS) on the building which are clearly visible beyond the palm tree.
Emily misuses the term "letter of indemnity"; it's an agreement in contract law, not a grant of immunity from prosecution by a judge.
At the Montecito bank, both the deputy and Matt make a significant tactical error. The deputy instead of closing the distance and using the front of the bank for cover and obtaining a superior firing position so as to stop the suspect upon his exiting the bank, he instead challenged him from a distance using insufficient cover from an inferior firing position. Accordingly, he was ganked by the suspect. Matt after driving the suspect made the same error- he could have followed the suspect to the bathroom and stopped him upon his exiting the bathroom.