Aerial footage shows the scale of the devastation in Oklahoma after tornadoes tore through the US state.
Buildings were destroyed and tens of thousands of residents were left without electricity.
Clean-up operations have been taking place in the town of Sulphur, where the storm flattened buildings, flipped over cars and tore off roofs.
On a visit to Sulphur, Oklahoma Governor Kevin Stitt said it appeared that every business in the town had been destroyed.
A state of emergency has been declared in 12 counties. The White House said President Joe Biden had offered the full support of the federal government.