Storm chasers Tim Samaras (center) and crew member Carl Young (right) were killed when a series of tornadoes rippped through El Reno, Oklahoma.
The storm chasers were killed following the tornadoes in El Reno.
People survey the damage at the at Canadian Valley Technology Center's El Reno Campus after it was hit by a powerful tornado on June 1, 2013 in El Reno, Oklahoma.
An overturned airplane at the Canadian Valley Technology Center sits amidst rubble after it was damaged by a series of tornadoes that ripped through the area
A person looks at cars damaged by a powerful tornado on June 1, 2013 in El Reno, Oklahoma.
Chad Beckman removes debris as he searches for missing animals after a tornado hit his relative's home on June 1, 2013 in El Reno, Oklahoma.
Charlene Wilford helps load up items saved from a home damaged after a tornado hit.