After the 2nd murder, after the LT says the odds of this being a coincidence are a million to one", the rookie detective says to the L.T., "Actually, the odds are 14,000 to one." With 60 minutes/hr X 24 = 1440, the odds are 1440 to one.
The city they keep showing is Montreal, Canada. The United States FBI and DOD would not be involved there.
Having been told that he is a possible target and hiring security, and then being told that both the previous victims were killed at exactly 10:44 pm, it is out of character that Miles Hayden would not stay awake and in the company of the security team between 10:30 and 11:00 pm and only go to sleep afterwards.
When shot, the first victim would have immediately dropped the liquor glass he was holding, but he holds on to it while he falls.