Damage caused by a tornado Monday, May 20, 2013 in Moore, Oklahoma. (Credit: Brett Deering)
Moore Okla. tornado damage
Massive piles of debris cover the ground after a powerful tornado ripped through the area on May 20, 2013 in Moore, Okla. The tornado, reported to be at least EF4 strength and two miles wide, touched down in the Oklahoma City area on Monday killing at least 51 people. (Photo by Brett Deering/Getty Images)
Tornado Outbreak Slams Through Oklahoma
Damage caused by a tornado Monday, May 20, 2013 in Moore, Oklahoma. (Credit: Brett Deering)
Tornado Outbreak Slams Through Oklahoma
Damage caused by a tornado Monday, May 20, 2013 in Moore, Oklahoma. (Credit: Brett Deering)
Tornado Outbreak Slams Through Oklahoma
Damage caused by a tornado Monday, May 20, 2013 in Moore, Oklahoma. (Credit: Brett Deering)
Tornado Outbreak Slams Through Oklahoma
Philip Gotcher stands in the rubble of his house after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. The tornado, reported to be at least EF4 strength and two miles wide, touched down in the Oklahoma City area on Monday killing at least 51 people. (Credit: Brett Deering/Getty Images)
Tornado Outbreak Slams Through Oklahoma
Debris covers the ground after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. The tornado, reported to be at least EF4 strength and two miles wide, touched down in the Oklahoma City area on Monday killing at least 51 people. (Credit: Brett Deering/Getty Images)
Tornado Outbreak Slams Through Oklahoma
Damage caused by a tornado Monday, May 20, 2013 in Moore, Oklahoma. (Credit: Brett Deering)
Moore Okla. tornado damage
The scene on the ground in Moore, Okla., on May 20, 2013 after a tornado packing 200 mph winds decimated the town of 55,000. (Photo: CBS News)
Tornado Outbreak Slams Through Oklahoma
Damage caused by a tornado Monday, May 20, 2013 in Moore, Oklahoma. (Credit: Brett Deering)
Tornado Outbreak Slams Through Oklahoma
Damage caused by a tornado Monday, May 20, 2013 in Moore, Oklahoma. (Credit: Brett Deering)
Tornado Outbreak Slams Through Oklahoma
Damage caused by a tornado Monday, May 20, 2013 in Moore, Oklahoma. (Credit: Brett Deering)
Tornado Outbreak Slams Through Oklahoma
Damage caused by a tornado Monday, May 20, 2013 in Moore, Oklahoma. (Credit: Brett Deering)
Tornado Outbreak Slams Through Oklahoma
Volunteers chain saw a fallen tree caused by a tornado Sunday night on Monday, May 20, 2013 in Shawnee, Oklahoma.
(Photo by Brett Deering/Getty Images)
Tornado Outbreak Slams Through Oklahoma
A power line pole snapped near the ground that was caused by a tornado Sunday night on Monday, May 20, 2013 in Shawnee, Oklahoma.
(Credit: Brett Deering/Getty Images)
Tornado Outbreak Slams Through Oklahoma
Candice Lopez, left, and Stephanie Davis help clean debris from the mobile home of Thelma Cox destroyed by a tornado Sunday night on Monday, May 20, 2013 in Shawnee, Oklahoma.
(Credit: Brett Deering/Getty Images)
Tornado Outbreak Slams Through Oklahoma
Volunteers help clean out Jean McAdams' overturned mobile home caused by a tornado Sunday night on Monday, May 20, 2013 in Shawnee, Oklahoma.
(Credit: Brett Deering/Getty Images)
Tornado Outbreak Slams Through Oklahoma
Damages caused by a tornado Sunday night on Monday, May 20, 2013 in Shawnee, Oklahoma.
(Credit: Brett Deering/Getty Images)
Tornado Outbreak Slams Through Oklahoma
Damages caused by a tornado Sunday night on Monday, May 20, 2013 in Shawnee, Oklahoma.
(Credit: Brett Deering/Getty Images)
Tornado Outbreak Slams Through OklahoTornado Outbreak Slams Through Oklahomama
Volunteers help with cleanup of Tom and Ronda Clark's property after it was damaged by a tornadMay 20, 2013 near Shawnee, Oklahoma. A series of tornados moved across central Oklahoma May 19, killing two people and injuring at least 21. (Credit: Brett Deering/Getty Images)
Tornado Outbreak Slams Through Oklahoma
Damages caused by a tornado Sunday night on Monday, May 20, 2013 in Shawnee, Oklahoma.
(Credit: Brett Deering/Getty Images)
Tornado Outbreak Slams Through Oklahoma
Volunteers help clean out Jean McAdams' overturned mobile home caused by a tornado Sunday night on Monday, May 20, 2013 in Shawnee, Oklahoma.
(Credit: Brett Deering/Getty Images)
Tornado Outbreak Slams Through Oklahoma
Volunteers help clean out Jean McAdams' overturned mobile home caused by a tornado Sunday night on Monday, May 20, 2013 in Shawnee, Oklahoma.
(Credit: Brett Deering/Getty Images)
Tornado Outbreak Slams Through Oklahoma
Damages caused by a tornado Sunday night on Monday, May 20, 2013 in Shawnee, Oklahoma.
(Credit: Brett Deering/Getty Images)
Tornado Outbreak Slams Through Oklahoma
Damages caused by a tornado Sunday night on Monday, May 20, 2013 in Shawnee, Oklahoma.
(Credit: Brett Deering/Getty Images)
Tornado Outbreak Slams Through Oklahoma
Damages caused by a tornado Sunday night on Monday, May 20, 2013 in Shawnee, Oklahoma.
(Credit: Brett Deering/Getty Images)
Massive Tornado Causes Large Swath Of Destruction In Suburban Moore, Oklahoma
In this handout provided by NASA from its MODIS satellite, a storm system that generated a EF4 tornado is captured at 19:40 UTC on May 20, 2013 over Moore, Oklahoma. The town reported a tornado to be at least EF4 strength and two miles wide that touched down Monday killing at least 24 people and leveling everything in its path. (Photo by NASA via Getty Images)
Massive Tornado Causes Large Swath Of Destruction In Suburban Moore, Oklahoma
Piles of debris lie around the northeast corner of Plaza Towers Elementary school after it was damaged by a tornado May 21, 2013 in Moore, Oklahoma. The (Photo by Brett Deering/Getty Images)
Massive Tornado Causes Large Swath Of Destruction In Suburban Moore, Oklahoma
Piles of debris lie around the north side of Plaza Towers Elementary school after it was damaged by a tornado May 21, 2013 in Moore, Oklahoma.(Photo by Brett Deering/Getty Images)
Massive Tornado Causes Large Swath Of Destruction In Suburban Moore, Oklahoma
Cars lie around the northeast corner of Plaza Towers Elementary school after it was damaged by a tornado May 21, 2013 in Moore, Oklahoma. (Photo by Brett Deering/Getty Images)
Massive Tornado Causes Large Swath Of Destruction In Suburban Moore, Oklahoma
Piles of debris lie around the northeast corner of Plaza Towers Elementary school after it was damaged by a tornado May 21, 2013 in Moore, Oklahoma. (Photo by Brett Deering/Getty Images)
Oklahoma Tornado Damage From Above
The view on May 21, 2013 from above the scene of some the damage caused by the devastating tornado in Oklahoma. (credit: Jessica Schneider/CBS 2)
Massive Tornado Causes Large Swath Of Destruction In Suburban Moore, Oklahoma
Piles of debris and cars lie around a home destroyed by a tornado May 21, 2013 in Moore, Oklahoma. (Photo by Brett Deering/Getty Images)
Massive Tornado Causes Large Swath Of Destruction In Suburban Moore, Oklahoma
Daniel Garbelman begins cleanup of his yard after it was damaged by a tornado May 21, 2013 in Moore, Oklahoma. (Photo by Brett Deering/Getty Images)
Massive Tornado Causes Large Swath Of Destruction In Suburban Moore, Oklahoma
In this handout provided by the U.S. Department of Defense, U.S. Soldiers and Airmen with the Oklahoma Army National Guard and the Oklahoma Air National Guard along with firefighters participate in recovery efforts after a tornado moved through on May 20, 2013 in Moore, Oklahoma. (Photo by Sgt. 1st Class Kendall James/U.S.