- The same murder weapon is used in an national security case in Los Angeles and to kill a marine in Idaho. Sam and Callen head to Idaho to work with an NCIS mobile team, called Red Team.
- They find the murdered Marine's phone at the crime scene and trace his murder to a video he took of a man. They track this mystery man, Spears, to LAX. He killed a TCA officer to assume his identity. NCIS is able to intercept his team before they can complete their task, but Spears gets away.
- Eric traces a satellite phone call between Spears and an unknown man. On the call, the man tells Spears where to hide out. Red Team heads to find Spears, while Sam and Callen interrogate the captured associate to find out who Spears was talking to on the phone.