A massive tornado struck Oklahoma on May 20, 2013, hitting hard an area outside Oklahoma City killing over 90 people.
The Oklahoma Tornado was estimated to be at least 2 miles wide at one point as it moved through Moore.
Seven children were killed at Plaza Towers Elementary School in Moore, Oklahoma, police officials said.
Texas Task Force 1, the state’s elite search and rescue team, has been activated to assist local officials and first responders in Oklahoma.
See here aftermath pictures of the tornado.
The team, which includes 84 total members, was deployed to New York City following 9/11 and to New Orleans in the aftermath of Hurricane Katrina.
It was recently deployed to West, Texas, following the explosion of a fertilizer plant.
President Obama signed a disaster declaration in Oklahoma and ordered federal aid to supplement state and local recovery efforts in the area affected by severe storms and tornadoes.
Read more about the Oklahoma Tornado on ABC.