A deadly tornado ripped through Oklahoma City and its suburbs Monday, killing dozens, injuring scores more, and flattening homes, schools, and a hospital.
As the search and rescue mission continued, Oklahoma Gov. Mary Fallin described the destruction as "horrific."
President Obama vowed to help the state "as long as it takes" and said that "Oklahoma needs to get what it needs right away.”
A photo collage below shows some of the destruction that Oklahoma is suffering from, as well as moving moments in the rescue mission.
A woman carries a child through a field near the collapsed Plaza Towers Elementary School in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile wide with winds up to 200 mph roared through the Oklahoma City suburbs Monday. (Photo by Sue Ogrocki/AP)
A vehicle lies upside down in the road after a powerful tornado ripped through the area in Moore, Okla. (Photo by Brett Deering/Getty Images)
Rebekah Stuck hugs her son, Aiden Stuck, 7, after she found him in front of the destroyed Briarwood Elementary after a tornado struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013. Aiden Stuck was inside the school when it was hit. (Photo by Nate Billings/The Oklahoman/AP)
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, Okla. (Photo by Brett Deering/Getty Images)
A child is pulled from the rubble of the Plaza Towers Elementary School in Moore, Okla., and passed along to rescuers Monday, May 20, 2013. (Photo by Sue Ogrocki/AP)
A man is taken away from the IMAX theater that was used as a triage area after a tornado that destroyed buildings and overturned cars struck Moore, Okla., May 20, 2013. (Photo by Gene Blevins/Reuters)
Rescue workers help free one of the 15 people that were trapped at a medical building at the Moore hospital complex after a tornado tore through the area of Moore, Okla. (Photo by Gene Blevins/Reuters)
Residents and rescuers look over the damage after a tornado struck Moore, Okla., May 20, 2013. (Photo by Gene Blevins/Reuters)
Two men attempt to pry open a door on this car to check for victims in a business parking lot west of I-35 south of 4th Street in Moore, on Monday, May 20, 2013. (Photo by Jim Beckel/The Oklahoman/AP)
A boy is pulled from beneath a collapsed wall at the Plaza Towers Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. (Photo by Sue Ogrocki/AP)
Two girls stand in rubble after a tornado struck Moore, Okla., May 20, 2013. (Photo by Gene Blevins/Reuters)
People walk through a neighborhood south of SW 149th between Western and Hudson after a tornado struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013. (Photo by Nate Billings/The Oklahoman/AP)
People are seen next to a damaged house and vehicles along a street after a huge tornado, in Moore, Okla., May 20, 2013. (Photo by Gene Blevins/Reuters)
Lonnie Langston talks about his garage that was swept off the concrete pad next to his house by a tornado May 20, 2013, near Shawnee, Oklahoma. (Photo by Brett Deering/Getty Images)
Debris covers the ground after a powerful tornado ripped through the area on May 20, 2013, in Moore, Okla. (Photo by Brett Deering/Getty Images)
Dana Ulepich looks at the debris from her house destroyed by a powerful tornado ripped through the area on May 20, 2013, in Moore, Okla. (Photo by Brett Deering/Getty Images)
Damaged vehicles are piled up in front of the Moore Warren Theater after a powerful tornado ripped through the area on May 20, 2013. (Photo by Brett Deering/Getty Images)
(L - R) Yvonne Barragar, Joe Marshall and Barbara Garcia sit in front of Barragar's destroyed house after a powerful tornado ripped through the area on May 20, 2013, in Moore, Okla. (Photo by Brett Deering/Getty Images)
Gene Tripp sits in his rocking chair where his home once stood after being destroyed by a tornado hit the area near 149th and Drexel on Monday, May 20, 2013, in Oklahoma City, Okla. (Photo by Chris Landsberger/The Oklahoman/AP)