A set of marine dog tags are found in a forest where a killer may be at large.
The team must stop a teenage student from detonating a bomb attached to his body and get the other students who have been taken hostage to safety.
Investigating agents uncovers shocking evidence when an ambulance transporting a dead marine explodes.
A navy SEAL is shot dead while threatening to throw himself from the top of a building. A known Al Qaeda operative emerges as the main suspect.