A man at close range shoots three rounds at Fornell, who, wearing body armor, returns fire with six rounds and kills the assailant, who was a Navy seaman; Gibbs and company and Fornell all investigate; Diane, the mutual ex-wife of Gibbs and Fornell, also shows up, and several interesting exchanges ensue. Vance announces that, according to him and two of his counterpart directors, Gibbs, Fornell, and Diane will work together on this case. McGee provides refuge and security to Diane, who has become overwrought, then Gibbs and Fornell find that they have relaxed. While executing a search warrant, Gibbs, Fornell, Tony, and McGoo find frozen fish and a dead body. Gibbs, Fornell, Tony, McGee, and Ziva find a missing accountant, who passes out and then dies. Gibbs makes a toast and a proposal at a wedding reception; Fornell, McGee, and Ziva find two of the bad guys. Gibbs and Diane have a chat.