Parsons confronts Morrow (about the sidelined investigation), and the latter rebuffs him; moments later a bomb explodes at the site of a formal dinner, thereby killing the SecNav and injuring Morrow and others. Gibbs strides into the office, meets with Vance and McBride's CO, and volunteers for a highly sensitive special operation; Gibbs goes to Iran; Tony makes plans to go to Tel Aviv. Soon Gibbs gets into a gunfight in Tehran and runs into Parsons, who makes a semi-apology; Gibbs and Parsons investigate. Ducky and Palmer deal with an intruder. Before Tony leaves, someone shoots up his pad; Tony chats with Vance; Tony calls McGee, whom Fornell intercepts and takes to a meeting at Tony's place; Vance visits Morrow, who says that Ziva is the next target. Gibbs and Fornell find out who changed McBride's orders; they do business in Arizona; Tony talks with Adam, who tells him about Ziva and her activity. [To be continued.]