: Callen goes undercover by attending a DNA rally, where he stages a fight with Sam to gain the group's trust.

: The investigation begins when a Navy lieutenant and a civilian die of cyanide poisoning after drinking water from the same communal jug at a bikini bar.

: The team discovers the incident was a "trial run" by a radical protest group called "Designing a New America" (DNA). The group plans to release cyanide into the city's water supply to make a political statement.

: The "release group" name, a well-known entity in the TV scene.