At the very beginning of the movie, while Noreen is lounging behind the counter, there are two pies on the kitchen serving window. A short while later, Jimmy places the second pie in the window.
After hearing the news of the nearby murders, Jimmy turns the radio off ... most people would instead turn it up to listen for more details.
Several scenes the pistol held by different people was not cocked. It was a single action M1911A1 Colt type semi auto pistol. It was not a double action type where you pull the trigger and it cocks the hammer for you. You can't just pull the trigger and it fires. To fire an uncocked pistol is impossible.