Light planes and vehicles sit among the debris after they were swept by a tsumani that struck Sendai airport in northern Japan on Friday March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
Tsunami waves swirl near a port in Oarai, Ibaraki Prefecture (state) after Japan was struck by a strong earthquake off its northeastern coast Friday, March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
Houses swallowed by tsunami waves burn in Sendai, Miyagi Prefecture (state) after Japan was struck by a strong earthquake off its northeastern coast Friday, March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
Earthquake-triggered tsunami waves sweep along Iwanuma in northern Japan on Friday March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
Houses are shown in flame while the Natori river floods over the surrounding area by tsunami tidal waves in Natori city, Miyagi Prefecture, northern Japan, March 11, 2011, after strong earthquakes hit the area. (AP Photo/Yasushi Kanno, The Yomiuri Shimbun)
Japan Earthquake
Giant fireballs rise from a burning oil refinery in Ichihara, Chiba Prefecture (state) after Japan was struck by a strong earthquake off its northeastern coast Friday, March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
Giant fireballs rise from a burning oil refinery in Ichihara, Chiba Prefecture (state) after Japan was struck by a strong earthquake off its northeastern coast Friday, March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
In this video image taken from Japan's NHK TV, water surrounds the airport building at Sendai Airport, Miyagi Prefecture, Japan Friday March 11, 2011 following a massive earth quake. (AP PHOTO/NHK TV)
Japan Earthquake
Tarmac, parking lot and surrounding area are covered with mud and debris carried by tsunami at Sendai Airport in Sendai, Miyagi Prefecture (state) after Japan was struck by a strong earthquake off its northeastern coast Friday, March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
Flames rise from houses and debris half submerged in tsunami in Sendai, Miyagi Prefecture (state) after Japan was struck by a strong earthquake off its northeastern coast Friday, March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
In this video image taken from Japan's NHK TV, cars are washed away in a coastal area of Kamaishi, Iwate prefecture Japan Friday March 11, 2011 following a massive earth quake. (AP PHOTO/NHK TV)
Japan Earthquake
People watch the aftermath of tsunami tidal waves covering a port at Kesennuma in Miyagi Prefecture, northern Japan, after strong earthquakes hit the area Friday, March 11, 2011. (AP Photo/Keichi Nakane, The Yomiuri Shimbun)
Japan Earthquake
Residents walk through the rubles of residents collapsed by a powerful earthquake in Iwaki, Fukushima prefecture (state), Japan, Friday, March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
Cars and other Debris swept away by tsunami tidal waves are seen in Kesennuma in Miyagi Prefecture, northern Japan, after strong earthquakes hit the area Friday, March 11, 2011. (AP Photo/Keichi Nakane, The Yomiuri Shimbun)
Japan Earthquake
Waves of tsunami hit residences after a powerful earthquake in Natori, Miyagi prefecture (state), Japan, Friday, March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
In this video image taken from Japan's NHK TV, a wave from the tsunami heads to the coast in Miyagi Prefecture on the north east coast of Japan Friday March 11, 2011 following a massive earth quake. (AP PHOTO/NHK TV)
Japan Earthquake
In this video image taken from Japan's NHK TV, a wave from the tsunami sweeps boats inland in Kamaishi, Iwate Prefecture, Japan Friday March 11, 2011 following a massive earth quake. (AP PHOTO/NHK TV)
Japan Earthquake
Parts of a beer factory's facilities are collapsed as the employees gather on the rooftops after a powerful earthquake in Sendai, Miyagi prefecture (state), Japan, Friday, March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
In this video image taken from Japan's NHK TV, a boat is caught in a tsunami swirls near a port in Oarai, Ibaraki Prefecture (state) a Friday March 11, 2011 following a massive earth quake. (AP PHOTO/NHK TV)
Japan Earthquake
A tsumani triggered by a powerful earthquake makes its way to sweep part of Sendai airport in northern Japan on Friday March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
Earthquake-triggered tsumanis sweep shores along Iwanuma in northern Japan on Friday March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
Flames rise from an oil refinery after a powerful earthquake in Ichihara, Chiba prefecture (state), Japan, Friday, March 11, 2011. The largest earthquake in Japan's recorded history slammed the eastern coast Friday. (AP Photo/Kyodo News)
Japan Earthquake
A child reacts to an aftershock at a temporary shelter in Tokyo for people affected by a strong earthquake which hit Japan Friday, March 11, 2011. (AP Photo/Itsuo Inouye)
Japan Earthquake
In this video image taken from Japan's NHK TV, a tsunami surge throws boats against a building in Hachinoche, Aomori Prefecture, Japan Friday March 11, 2011 following a massive earth quake. (AP PHOTO/NHK TV)
Japan Earthquake
In this video image taken from Japan's NHK TV, a tsunami surge sweeps boats, cars and other debris over a highway in the Sendai City area, Miyagi Prefecture, Japan Friday March 11, 2011 following a massive earth quake. (AP PHOTO/NHK TV)
Japan Earthquake
Oarai town is submerged after a tsunami in Ibaraki prefecture (state), Japan, Friday, March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
Hotel employees squat down in horror at the hotel's entrance in Tokyo after a strong earthquake hit Japan Friday, March 11, 2011. (AP Photo/Itsuo Inouye)
Japan Earthquake
Earthquake-triggered tsumanis sweep shores along Iwanuma in northern Japan on Friday March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
People walk past a ruined bus stop which was crushed by part of fallen outer wall of a nearby building in Sendai, Miyagi Prefecture (state) after Japan was struck by a strong earthquake off its northeastern coast Friday, March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
A tsunami tidal wave washes away houses in Kesennuma, Miyagi Prefecture, Friday, March 11, 2011 after strong earthquakes hit the area. (AP Photo/Keichi Nakane, The Yomiuri Shimbun)
Japan Earthquake
An aerial shot shows a ship sitting on the ground in the port of Hitachinaka city in Ibaraki prefecture on March 11, 2011 after a tsunami tidal wave hit following a a large earthquake. (Photo/STR/AFP/Getty Images)
Japan Earthquake
An aerial shot shows vehicles ready for shipping being carried by a tsunami tidal wave at Hitachinaka city in Ibaraki prefecture on March 11, 2011. (Photo/STR/AFP/Getty Images)
Japan Earthquake
Hundreds of people wait for busses at a Tokyo bus terminal as commuter trains stopped their services in the Tokyo metropolitan area on March 11, 2011. (Photo/STR/AFP/Getty Images)
Japan Earthquake
Vehicles rest on a damaged road at a carpark in Yabuki, in southern Fukushima Prefecture on March 11, 2011 after an earthquake rocked Japan. (Photo/Darren Gubbins/AFP/Getty Images)
Japan Earthquake
Vehicles are crushed by a collapsed road at a carpark in Yabuki, in southern Fukushima Prefecture on March 11, 2011 after an earthquake rocked Japan. (Photo/Darren Gubbins/AFP/Getty Images)
Japan Earthquake
Traffic is jammed on a road in Sendai city, Miyagi prefecture (state), Japan, after a powerful earthquake, the largest in Japan's recorded history slammed the eastern coasts Friday, March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
Broken bottles litter on the floor of a food shop in Sendai after a powerful earthquake hit northern Japan on Friday March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
In this photo released by Nexco East Japan, a worker inspects a caved-in section of the Joban Motorway near Mito, Ibaraki Prefecture, after one of the largest earthquakes ever recorded in Japan slammed its eastern coast Friday, March 11, 2011. (AP Photo/Nexco East Japan via kyodo News)
Japan Earthquake
Houses and others burn in Natori, Miyagi Prefecture (state) Friday night, March 11, 2011 after Japan was struck by a strong earthquake off its northeastern coast earlier in the day. (AP Photo/Kyodo News)
Japan Earthquake
A chimney falls onto its factory in Sendai, Miyagi prefecture (state), Japan, after one of the largest earthquakes on record slammed Japan's eastern coasts Friday, March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
Black smoke raises from a building during a fire in Tokyo after one of the largest earthquakes on record slammed Japan's eastern coasts Friday, March 11, 2011. (AP Photo/Kyodo News)
Japan Earthquake
Swirls of waves approach to a coast in Iwaki, Fukushima Prefecture, northern Japan, Friday, March 11, 2011 after a powerful tsunami spawned by the largest earthquake in Japan's recorded history slammed the eastern coast. (AP Photo/The Yomiuri Shimbun, Yasushi Nagao)
Japan Earthquake
Residents take a rest after being evacuated to City Hall in Hachinohe, Aomori prefecture (state), Japan, after a powerful earthquake, the largest ever recorded, slammed Japan's eastern coasts Friday, March 11, 2011. (AP Photo/Kyodo News)