Not in the Line of Fire - S3-E15
Revealing mistake: When James points out to Carter that Rags is eating his sleeping pills, it's painfully obvious that they are actually dog biscuits. (00:06:15)
Not in the Line of Fire - S3-E15
Visible crew/equipment: After Arthur proposes to Nicki, Mike and the Mayor have a heart-to-heart in Mike's office. A boom mic can be seen in the top-left corner of the screen. (00:17:15)
Not in the Line of Fire - S3-E15
Continuity mistake: When the vendor throws the hotdog at the press conference, a lot of the toppings/condiments trail behind it. When the shot changes and the hotdog hits Mike, there are no condiments trailing behind it. (00:19:10)
Not in the Line of Fire - S3-E15
Continuity mistake: When Mike is watching the tape for the last time, it shows that he was protecting Nicki. We can see a reflection of Mike's office, and the doorway. It's completely empty, but when the shot changes Nicki is standing right there. (00:20:20)
Not in the Line of Fire - S3-E15
Revealing mistake: Two thirds of the way into the show, Mike and the mayor are talking in his office. If you look at the Mets hat behind Mike, the NY emblem is upside down.
Not in the Line of Fire - S3-E15
Revealing mistake: 1/3 through the show, Stuart is talking to Nicki's boyfriend in the cafeteria, and the candy machine has "N&Ns" in it instead of "M&Ms" for both plain and peanut. The letters have been partially covered up.