Continuity mistake: Duckey says there are 3 ways to kill a mongoose, while he has some form of medical instrument in his hand. However when he bends down to point at the victim's face, the instrument has disappeared. (00:04:10)
Visible crew/equipment: When Caitlin refers to Gibbs as a Gloomy Gus it then cuts to Tony with Abby, and in the following shot facing the glass doors, the reflection of the camera and its operator are visible as they move toward the left of the screen. (00:14:05)
Visible crew/equipment: When Tony open the van's back door to show Abe's "daughter" the weapons they are alone, with Gibbs taking their photos from across the road. There's a closeup of the case of LAWs, and in the next shot a crew member (looking at the actors) is visible at the left side of the screen, standing directly behind them (she's in this shot only). (00:16:10)
Visible crew/equipment: When the "militia" guy fires the MP5 at the mannequin, after the last closeup of that mannequin it then cuts to a long shot facing the militia members, Gibbs, and Stone, and two crew members (one in shorts and the other wearing jeans) are visible at the top right side of the screen. (00:38:15)
Visible crew/equipment: When it's discovered the M60s don't have firing pins Gibbs is pushed toward the green doors, and in the first closeup facing Gibbs the blue crash mat is visible at the bottom of the screen. (00:39:50)
Chosen answer: "Policing your brass", means to pick up your expended shell casings, after firing your rifle, or pistol.
pross79