Possible Clues:

• Guided missile
• French anti-ship missile
• Missile
• Causes havoc in water for former officer to back Lawrence
• Type of missile
• Subsonic tactical missile
• Helmsman in endless river redirected missile
• Subsonic tactical missile that travels at very low altitude
• Subsonic, low-altitude missile
• Missile that sank a British destroyer in the Falklands War