In the Politovskiy's reactor, the runaway fission reaction had virtually annihilated both the incoming seawater and the uranium fuel rods. Their debris settled on the after wall of the reactor vessel. In a minute there was a meter-wide puddle of radioactive slag, enough to form its own critical mass. The reaction continued unabated, this time directly attacking the tough stainless steel of the vessel. Nothing man made could long withstand five thousand degrees of direct heat. In ten seconds the vessel wall failed. The uranium mass dropped free, against the aft bulkhead.

Petchukocov knew he was dead. He saw the paint on the forward bulkhead turn black, and his last impression was of a dark mass surrounded with the blue glow. The engineer's body vaporized an instant later, and the mass of slag dropped to the next bulkhead aft.

Forward, the submarine's nearly vertical angle in the water eased. The high-pressure air in the ballast tanks spilled out of the bottom floods and the tanks filled with water, dropping the angle of the boat and submerging her. In the forward part of the submarine men were screaming. The captain struggled to his feet, ignoring his broken leg, trying to get control, to get his men organized and out of the submarine before it was too late, but the luck of Evgeni Sigismondavich Politovskiy would plague his namesake one last time. Only one man escaped. The cook opened the escape trunk hatch and got out. Following what he had learned during the drill, he began to seal the hatch so that men behind him could use it, but a wave slapped him off the hull as the sub slid backwards.

In the engine room, the changing angle dropped the melted core to the deck. The hot mass attacked the steel deck first, burning through that, then the titanium of the hull. Five seconds later the engine room was vented to the sea. The Politovskiy's largest compartment filled rapidly with water. This destroyed what little reserve buoyancy the ship had, and the acute down-angle returned. The Alfa began her last dive.

The stern dropped just as the captain began to get his control room crew to react to orders again. His head struck an instrument console. What slim hopes his crew had died with him. The Politovskiy was falling backwards, her propeller windmilling the wrong way as she slid to the bottom of the sea.

The Pogy

"Skipper, I was on the Chopper back in sixty-nine," the Pogy's chief said, referring to a horrifying accident on a diesel-powered submarine.