Debris covers the ground after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
A vehicle lies upside down in the road after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
Massive piles of debris cover the ground after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
People assess the damage after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
Only the rubble of a house remains after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
Nathan Ulepich searches outside of the back of his house, destroyed after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
Dana Ulepich searches inside a room left standing at the back of her house, destroyed after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
Dana Ulepich looks at the debris from her house, destroyed by a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
Yvonne Barragar sits in front of her destroyed house after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In 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. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
Damaged vehicles are piled up in front of the Warren Theater after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
People walk through a damaged area near the Warren Theater after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
Yellow caution tape marks off the area surrounding the heavily damaged Moore Medical Center after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
Flipped vehicles are piled up outside the heavily damaged Moore Medical Center after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
Cars marked with an orange X, denoting they had been checked for occupants, are piled up in what was the front entrance to the damaged Moore Medical Center after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
Cars marked with an orange X, denoting they had been checked for occupants, are piled up in what was the front entrance to the damaged Moore Medical Center after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
The hood of car is wedged into the front window of the Moore Medical Center after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
Tornado Damage In Moore, Oklahoma
A Goodwill donation station is surrounded by debris after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. (credit: Brett Deering/Getty Images)
