A lance corporal in the Marine Corps Reserve, assigned to an armory at Camp Pendleton, dies of garroting; he was an informant for an OSP agent about the disappearance of six Dragon anti-tank missiles from the Marine Corps Base; Callen and company investigate in the absence of Hetty (while she testifies in Washington, DC). While Kensi sniffs around, the suspect and a private, Scott, attacks her with a garrote, but she proves to be one tough chick; Scott goes to a brig, as do G and Sam in undercover roles (G as a fellow prisoner and Sam as a guard); during a staged breakout from an armored paddy wagon, G bonds with Scott and infiltrates his group (which is a renegade militia). Scott directs G to an armed camp, and Sam arrives in a different role; fun and games abound, as do subterfuge and an air show. G and Sam intercept one of the bad guys with the missiles, and finally the cavalry arrives; a frightened young man switches sides and calls his mother.
—DocRushing