Related Clues:

• Submarine-launched ballistic missile
• Dire disaster -- trapped by high-explosive missile
• Weapon tip off demanding attention
• Weapon I had thrown in river
• Spear I'd thrown into river
• Weapon made of explosive containing free energy
• Vehicle guarded by explosive weapon
• Nuclear missile
• Audible attempt to reduce effectiveness of missile
• Weapon I would throw into river
• Britannia's spear
• SEAL insignia
• Progress on intercepting explosive missile system
• Go up to stop explosive weapon
• Spear I had dropped in river