Season 6, Episode 15 Iron Coffin

First Aired: February 20, 2001

When a Russian submarine is destroyed, the Russians accuse the U.S. Submarine Service of wrongdoing, and Harm's friendship with Capt. Volkonov puts him in the middle of the battle. Congresswoman Latham: Anne-Marie Johnson. Mac: Catherine Bell. Lt. Roberts: Patrick Labyorteaux.