He suggested the sub may have been spying on a top secret consignment of military grade plutonium, shipped from the French port of Cherbourg to Japan on board a British nuclear transport vessel.

BBC: France probes US submarine link to fishing boat sinking

Blunk, 26, had served on the aircraft carrier the USS Nimitz for more than six years, working with the boilers and propulsion systems of the nuclear-powered vessel, and hoped to re-enlist in the military, according to his grandparents Thomas and Kay Blunk of Central, Texas, outside Lufkin.

WSJ: Colorado Shooting Took Mostly Young Lives

The bright yellow dome of the steel containment vessel at Unit 4, Fukushima Daiishi nuclear power plant (FDI) is clearly visible amid the pulverized remains of the building in a new video released by the Tokyo Electric Power Company.

FORBES: New Video From Fukushima Shows Containment Vessel Dome Amid Debris

In 2002, Tepco admitted to the Nuclear and Industrial Safety Agency that it had falsified the results of safety tests on the containment vessel of the No. 1 reactor, which is now one of three reactors that workers are struggling to keep from overheating.

WSJ: Nuclear Issues Put Focus on Japan Regulators