This is all that remains of the school in Oklahoma where nine-year-old Garret Hunnan was a student. Briarwood elementary was one of the casualties of the massive tornado that brought devastation to the town of Moore. Garret's unlikely to forget the moment the powerful twister hit. (SOUNDBITE) (English) GARRET HUNNAN, NINE YEAR OLD STUDENT FROM BRIARWOOD ELEMENTARY SCHOOL, SAYING: "My teacher said, 'everything was going to be all right.' I didn't believe her. I was just really scared. I was scared. And then the tornado hit. I just let everything hit me. I got a little bump in the back of my head. I'm just fine, and so, I got out. We went through the bathrooms, and then, there's this open window. Our reading teacher found us a little desk, and there's a pile of rubble coming right up to it, so we can get out." The tornado killed 24 people and injured about ten times as many more. It swept in on Monday packing winds up to 200 miles an hour (320 kilometres per hour) Up to 13, 000 homes were destroyed. Residents are trying to pick up the pieces of their lives. (SOUNDBITE)(English) TRISH HARRIS, TORNADO SURVIVOR, SAYING: "We've lost one person in the tornado, stepdad of one of the children who live here, so we're a little devastated, just trying to get some clothes together for a funeral. I don't know what else to say, there are no words to describe it really." U.S. President Barack Obama is due to visit the town on Sunday to see the damage first hand.