When Kasie is showing the gym security footage to McGee and Knight, the footage displays a time stamp "23:00:00 P.M." It should be either 23:00 or 11pm, not both. In addition to this, McGee says "11pm at night" where both the pm and the night signify the same thing; someone of Timothy McGee's intelligence would not make this gaff.
Near the end Agent Knight pulls her supervisor off the roof ledge to prevent him from jumping off and killing himself, then she aims a gun at him. Surely if he was going to commit suicide by jumping then he wouldn't be worried about being shot? She should have jumped on him and cuffed him.