On November 21, 2016, news helicopters from around the globe converged on the Panama Canal to capture history: the transit of USS Zumwalt, America’s most advanced warship.At $4.4 billion, she cost more than a nuclear aircraft carrier. This 15,000-ton destroyer was built to strike targets 100 miles inland. Her revolutionary electric drive generated power for weapons that didn’t exist yet.But now, just five weeks after commissioning, Zumwalt wasn’t moving. Saltwater had leaked into her propulsion bearings, drowning her engines. She drifted helplessly between the canal walls. Tugboats rushed alongside, fighting to prevent her from crashing into concrete while tourists filmed from the banks.Now, the destroyer designed to be invisible on radar had become the most watched vessel on Earth.