Once a Hero - S4-E8
Continuity mistake: The way Gibbs holds his ID out to the maintenance man changes between shots. In the first shot he has 2 fingers inside the ID in the second shot just his thumb is inside the ID. (00:07:40)
Once a Hero - S4-E8
Continuity mistake: When talking to Luis, his ID badge keeps moving and rotating without touching it. (00:08:20)
Once a Hero - S4-E8
Continuity mistake: When DiNozzo is resting at his desk, he has he feet crossed with his left foot on top of his right foot. When the shot changes his right foot is now on top. His hands have also gone from clenched to unclenched in the same shots. (00:20:25)
Chosen answer: "Policing your brass", means to pick up your expended shell casings, after firing your rifle, or pistol.
pross79