The Stealth Threat in Our Harbors Unmanned Undersea Vehicles (UUVs)—ranging from low-cost reconnaissance drones to armed “kamikaze” systems—are fast becoming one of the most asymmetric threats to U.S. maritime infrastructure. Adversaries use these quiet, stealthy platforms to mine harbors, spy on naval bases, or sabotage undersea assets with near impunity. Traditional sonar systems struggle to…

