Soldiers of Japan Self Defense Forces rescue a tsunami victim from a flooded area in Ishinomaki, Miyagi Prefecture, Sunday, March 13, 2011. (AP)

In this image made off Japan's NHK TV video footage, vehicles are washed away by tsunami in coastal area in eastern Japan after Japan was struck by a magnitude 8.9 earthquake off its northeastern coast Friday, March 11, 2011.

Residents of the seaside town of Yotsukura, northern Japan, inspect under their car as they clear debris from their homes Monday, March 14, 2011, three days after a giant quake and tsunami struck the country's northeastern coast. (AP Photo/Mark Baker)

A resident of the seaside town of Toyoma, northern Japan, clears debris from the remains of the resident's home Monday, March 14, 2011, three days after a giant quake and tsunami struck the country's northeastern coast. (AP Photo/Mark Baker)

Thick smoke billows from an industrial facility in Kamaishi, northeastern Japan, on Sunday March 13, 2011, two days after giant quake and tsunami struck the country's northeastern coast. (AP Photo/Kyodo News) MANDATORY CREDIT, NO LICENSING ALLOWED IN CHINA, HONG KONG, JAPAN, SOUTH KOREA AND FRANCE

A man inspects the damage in Ofunato, Iwate prefecture, northern Japan, Sunday, March 13, 2011, two days after a powerful earthquake-triggered tsunami. (AP)

A Japanese couple walk through the ruins of their neighborhood in Sendai, northeastern Japan, on Sunday, March 13, 2011. (AP)

Buildings burn in Yamada town, Iwate prefecture (state) after Japan's biggest recorded earthquake hit Friday March 11, 2011. (AP)

Japanese recovery teams enter a destroyed area of Sendai, northeastern Japan, on Sunday, March 13, 2011. (AP)

A car sits on top of a small building in a destroyed neighborhood in Sendai, Japan, on Sunday, March 13, 2011 after it was washed into the area by the tsunami that hit northeastern Japan. (AP)

Volunteer firefighters search for victims of Friday's tsunami at Rikuzentakada, Iwate Prefecture, northern Japan, Sunday, March 13, 2011. (AP)

A volunteer firefighter searches for victims of Friday's tsunami at Rikuzentakada, Iwate Prefecture, northern Japan, Sunday, March 13, 2011. (AP)

Buildings are devastated after a giant earthquake and tsunami struck the country's northeastern coast, at Ofunato, northeastern Japan, on Sunday March 13, 2011 (AP)

People evacuate from their houses in Tagajo near Sendai, northern Japan Sunday, March 13, 2011 after Friday's catastrophic earthquake and tsunami. (AP)

A policeman control the traffic in Ofunato, Iwate Prefecture, northern Japan, Sunday, March 13, 2011, two days after a powerful earthquake-triggered tsunami hit Japan's east coast. (AP)

People walk through the rubble in Ofunato, Iwate Prefecture, northern Japan, Sunday, March 13, 2011, two days after a powerful earthquake-triggered tsunami hit Japan's east coast. (AP)

A man searches through the rubble in Ofunato, Iwate Prefecture, northern Japan, Sunday, March 13, 2011, two days after a powerful earthquake-triggered tsunami hit Japan's east coast. (AP)

A motorcyclist passes through the rubble in Ofunato, Iwate Prefecture, northern Japan, Sunday, March 13, 2011, two days after a powerful earthquake-triggered tsunami hit Japan's east coast. (AP)

A woman walks past debris drifted by Friday's tsunami at Rikuzentakada, Iwate Prefecture, northern Japan, Sunday, March 13, 2011. (AP)

A vessel sits on the rubble in Ofunato, Iwate Prefecture, northern Japan, Sunday, March 13, 2011, two days after a powerful earthquake-triggered tsunami hit Japan's east coast. (AP)

People make their way on a street following a massive tsunami that's triggered by a catastrophic earthquake in Tagajo near Sendai, northeastern Japan, on Sunday, March 13, 2011. (AP)

Men search through a damaged house in Ofunato, Iwate Prefecture, northern Japan, Sunday, March 13, 2011, two days after a powerful earthquake-triggered tsunami hit Japan's east coast. (AP)

People walk on a street following a massive tsunami that's triggered by a catastrophic earthquake in Tagajo near Sendai, northeastern Japan, on Sunday, March 13, 2011. (AP)

Severely sick quake victims are carried to a Japan Air Self-Defense Force helicopter following a catastrophic earthquake and tsunami, in Sendai, northeastern Japan, on Sunday March 13, 2011. (AP)

A sofa remains on the rice paddy flooded by tsunami following last Friday's earthquake in Sendai, Miyagi Prefecture, Japan, Sunday, March 13, 2011. (AP)

Vehicles are submerged in waters in the central section of Ishinomaki, northeastern Japan, on Sunday March 13, 2011, two days after a giant earthquake and tsunami struck the country's northeastern coast. (AP)

A residents of the seaside town of Yotsukura, northern Japan, walks through his damaged home Monday, March 14, 2011, three days after a giant quake and tsunami struck the country's northeastern coast. (AP Photo/Mark Baker)

A man is scanned for levels of radiation in Koriyama, Fukushima Prefecture, Japan, Sunday, March 13, 2011. Friday's quake and tsunami damaged two nuclear reactors at a power plant in the prefecture. (AP Photo/Mark Baker)

Gutted vehicles and the rubble is seen in Kesennuma, Miyagi prefecture, northern Japan, Sunday, March 13, 2011, two days after a powerful earthquake-triggered tsunami hit the country's east coast. (AP Photo/Kyodo News) JAPAN OUT, MANDATORY CREDIT, NO SALES IN CHINA, HONG KONG, JAPAN, SOUTH KOREA AND FRANCE

A residents of the seaside town of Yotsukura, northern Japan, walks past damaged homes Monday, March 14, 2011, three days after a giant quake and tsunami struck the country's northeastern coast. (AP Photo/Mark Baker)

A man, with his face covered to protect against dust, looks out at the damage Monday, March 14, 2011, in Yotsukura, Japan, three days after a giant quake and tsunami struck the country's northeastern coast. (AP Photo/Gregory Bull)

A man searches for salvageable items in his home Monday, March 14, 2011, in Yotsukura, northern Japan, three days after a giant quake and tsunami struck the country's northeastern coast. (AP Photo/Gregory Bull)

A resident of the seaside town of Yotsukura, northern Japan, clears debris from his homes Monday, March 14, 2011, three days after a giant quake and tsunami struck the country's northeastern coast. (AP Photo/Mark Baker)

A car sits amongst the rubble of destroyed homes in the seaside town of Toyoma, northern Japan, as residents began clearing debris from their homes Monday, March 14, 2011, three days after a giant quake and tsunami struck the country's northeastern coast. (AP Photo/Mark Baker)

Residents of the seaside town of Toyoma, Japan, sift through their belongs as they clear debris from their homes Monday, March 14, 2011, three days after a giant quake and tsunami struck the country's northeastern coast. (AP Photo/Mark Baker)