This is surveillance footage of a school bus caught in the March 2nd Henryville, Ind. tornado. Through the back windows, you can clearly see the bus thrown into a nearby building.

The audio in this clip is of bus driver Angel Perry evacuating the children.

The bus driver began evacuating the eleven children onboard just three minutes before the tornado got to the bus. The last child was out with less than a minute to spare. Chilling.