Tornado w Missouri

A man carries a box out of a house damaged by a tornado Monday, May 23, 2011, in Joplin , Mo. A massive tornado that tore a six-mile path across south...

A mangled street sign stands among tornado debris in Joplin, Mo., Monday, May 23, 2011. A large tornado moved through much of the city Sunday, damagin...

A firefighter searches a home Monday, May 23, 2011, that was destroyed by a tornado in Joplin, Mo. A large tornado moved through much of the city Sund...

Crews work to restore power to Reading, Kan., Monday, May 23, 2011. The crews were working to restore power to the small town after it was struck over...

Kathleen Kelsey, a canine rescue specialist with the Missouri Task Force One search-and-rescue team, guides a live-find dog named ChicoDog through the...

Damaged cars remain in the parking lot of a destroyed grocery store the day after a tornado swept through Joplin, Mo., Monday, May 23, 2011. Officials...

Rescuers watch as bulldozers sift through the rubble of a collapsed Home Depot store in Joplin, Mo., Monday, May 23, 2011. A destructive tornado swept...

Firefighters from Oklahoma move a dresser while searching for victims in the wreckage of a public housing complex in Joplin, Mo., Monday, May 23, 2011...

A broken bike and what remains of a destroyed neighborhood are seen Monday, May 23, 2011, in Joplin, Mo. A large tornado moved through much of the cit...

Tim Slocombe looks over debris for survivors, with St. John's Regional Medical Center in the distance, the day after a tornado struck Joplin, Mo., May...

The damaged entrance of a Walmart store after a tornado struck it in Joplin, Mo., May 23, 2011. The twister, which touched down Sunday evening, killed...

Sara Thomas, right, talks with a passerby in the aftermath of tornado that destroyed Joplin, Mo., May 23, 2011. The twister, which touched down Sunday...

The remains of the St. John's Regional Medical Center, which now sits empty, in the aftermath of tornado that destroyed Joplin, Mo., May 23, 2011. The...

A podium sits idle following a press conference in the aftermath of a tornado that destroyed Joplin, Mo., May 23, 2011. The twister, which touched dow...

Tom Hatfield smokes a cigarette as he and friend Bonnie McMullen leave before another storm rolls in after trying to salvage photos and clothes at Hat...

Jamie and Annie Ihlenfeldt, who moved into their new home just a month ago, take a photo on the ruins of their home after a tornado destroyed it in Jo...

Sara Thomas hugs her fiancee Jimmy Baker after realizing the uncertain fate of their friend's four children who lived in a house that remains only as...

Vehicles sit overturned in front of the remains of the St. John's Regional Medical Center, which now sits empty, in the aftermath of a tornado that de...

A boy rides on the front of a bulldozer through a neighborhood of damaged houses after a tornado destroyed it in Joplin, Mo., May 23, 2011. The twiste...

Tim Slocombe and his son, Eliajah, 16, raise an American flag on a tree the day after a tornado struck Joplin, Mo., May 23, 2011. The twister, which t...

Kevin Massey documents the remains of Anne Ihlenfeldt's home the day after a tornado struck Joplin, Mo., May 23, 2011. The twister, which touched down...

The remains of homes and St. John's Regional Medical Center, rear, the day after a tornado struck Joplin, Mo., May 23, 2011. The twister, which touche...

Chris Williams, left, and Tim Slocombe check a collapsed house for survivors the day after a tornado struck Joplin, Mo., May 23, 2011. The twister, wh...

PHOTO:EAST NEWS/AFP Infografika, prezentujaca jak powstaje tornado.

This frame grab from video shows lightning inside a massive tornado on Sunday, May 22, 2011, outside Joplin, Mo. The tornado tore a 6-mile path acros...

On this Sunday, May 22, 2011 photo, two young Joplin, Mo, residents carry their dog and head to a rescue center after their home was destroyed by a to...