Untouchable - S3-E20
Revealing mistake: When the Lieutenant is explaining how her gun was in the victim's house, the camera pans behind Gibbs. Pay close attention and you can see a very faint shadow move across his back. Since we see there is nothing behind him on numerous occasions, it can only be part of the film crew. (00:18:20)
Untouchable - S3-E20
Revealing mistake: When Tony is winding the cat up in the carry basket, we see a side shot when the cat "attacks" him. However looking through the side of the cage, you can see the cat is nowhere in sight and therefore unable to attack Tony. (00:07:50)
Chosen answer: "Policing your brass", means to pick up your expended shell casings, after firing your rifle, or pistol.
pross79