Grantham Coleman

A sailor who lost two siblings -- Marines who were killed in the line of duty -- needs a bone marrow transplant; Bishop returns to Oklahoma for Thanksgiving.

Sam assumes a former alias in a risky undercover operation to take down an elusive drug lord; Hetty interrupts Callen and Anna's romantic night to assign them a mission to escort a prisoner.

The night shift is tested when a rancher accidentally shoots his wife. Elsewhere, TC heads to a teen party to save the life of a young football star; Jordan and Kenny treat a beauty queen in severe distress; and Topher makes a decision about his job.

When Jerrod gets into a fight with a soldier in front of Joe and Bobby, Joe's desire to make it up to the soldier causes problems that test the limits of what it means to truly support the troops.