WATCH: Little Girl Falls From Bus, Then Firefighter Saves Her Life

Ryan Ciampoli was traveling behind the bus down Highway 65 in Harrison on Wednesday when his dash-mounted camera, running the entire time, caught a scene he couldn't quite wrap his mind around.

The video shows the back door of the bus fly open, with a 4-year-old girl hanging on. She falls to the ground and lies motionless, as the bus continues to drive away and Ciampoli's vehicle rolls up to her and stops. The volunteer firefighter went into action.