This combination of two satellite images provided by GeoEye and MJ Harden shows, left, an area of Joplin, Mo. which includes a view of the Joplin High School, taken in August of 2009 and, right, the same area of Joplin is shown, including the high school, taken Tuesday May 24, 2011, two days after a devastating tornado tore through the city.
Kelsee Shanks, left, of Carl Junction, Mo., hugs Theresa Adams, of Joplin, Mo. in front of the wreckage of a school in Joplin on Tuesday, May 24, 2011. Shanks has children that attend the school, and Adams is a preschool aid at St. Mary's.
Zane Sexton pauses with his girlfriend Buffie Wescoat while salvaging items after Sexton's home was destroyed when a massive tornado passed through the town killing at least 116 people May 24, 2011 in Joplin, Mo.
Kenneth Thomas searches through toys kept at his house for his grand children in what used to be his living room Wednesday, May 25, 2011, in Joplin, Mo. Thomas' house and much of Joplin was destroyed after a massive tornado hit the area Sunday night.
Residents hug outside a home destroyed in Joplin, Mo. on Tuesday, May 24, 2011. The tornado that ripped through the town of about 50,000 people May 22, is being called the deadliest single tornado in the U.S. in 60 years.
Pete Anastosopolos (L) and Cyndi Devore sort through what is left of her home that was destroyed after a massive tornado passed through the town killing at least 116 people on May 24, 2011 in Joplin, Mo.
Janet Martin attempts to salvage medication and mementos from her brother's home before a second storm moves in, on May 23, 2011 in Joplin, Missouri. 'Twenty minutes before the storm, he left to go to church. He would have been in that basement if he hadn't gone,' Martin said.
Maggie Kelley and her husband, Trey Adams hug their dog, Saint, after finding him amid the rubble of her home in Joplin, Mo. Monday, May 23, 2011. The two are Hurricane Katrina evacuees. Joplin was leveled by a tornado that destroyed nearly 30 percent of the town on Sunday afternoon.
A hand-written note to rescue workers is seen on a house that was damaged by a tornado that destroyed nearly 30 percent of Joplin, Mo., on Sunday afternoon. The twister cut a six-mile path through the city.
Kimmy Lankford carries her son Jack, 5, during a walk through their neighborhood on May 25, 2011 in Joplin, Mo. The Lankfords continue to reside in their home a few blocks away which was damaged but remains habitable.
Chad Efird tosses debris out of a house as he assists with cleanup Tuesday, May 24, 2011, in Joplin, Mo. A large tornado moved through much of the city Sunday, damaging a hospital and hundreds of homes and businesses.
A damaged home is seen surrounded by debris from other houses after a massive tornado struck Joplin, Mo. At least 116 people where killed in the storm and authorities were prepared to find more bodies in the town of 50,000.
Meghan Miller stands in the middle of a destroyed neighborhood as she checks on her sister-in-law's home Monday, May 23, 2011, in Joplin, Mo. A large tornado moved through much of the city Sunday, killing 116 people and damaging hundreds of homes and businesses.
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 wreckage of a public housing complex in Joplin, Mo., Monday, May 23, 2011.
A man carries a box out of a house damaged by a tornado Monday, May 23 in Joplin , Mo. A massive tornado that tore a six-mile path across southwestern Missouri, ripping into a hospital, crushing cars like soda cans and leaving behind only splintered tree trunks where entire neighborhoods once stood.
Deputy Eddy Mathews of the Mayes County, Okla., Sheriff's Department hands off a dog to volunteer Mike Hughey of Ozark, Mo., after rescuers found a pair of dogs in the rubble of a destroyed home near the St. John's Regional Medical Center in Joplin, Mo., Monday, May 23.
The wall of a home in Joplin, Mo. is seen Monday, May 23, 2011, after it was damaged by a tornado that destroyed nearly 30 percent of the town on Sunday afternoon. The Joplin twister was one of 68 reported tornadoes across seven Midwest states over the weekend, stretching from Oklahoma to Wisconsin, according to the National Weather Service's Storm Prediction Center.
Emergency personnel assess the damage of the remains of the Academy Sports building at 17th St. and Range Line Road in Joplin, Mo. following the tornado that struck the city on Sunday evening, May 22, 2011.
Volunteer firefighters William Jackson, left, and Ashley Martin, center, from Oklahoma, and Johnny Ward of Joplin look through the wreckage of a home where it was feared a pregnant woman as feared to be trapped following a tornado in Joplin, Mo., Sunday, May 22, 2011. The three did not find anyone during their search.