Mississippi: A busload of passengers, the majority of them school kids, may have two sisters to thank for their lives.

Bettye Windom and her sister, Beth, both from Mississippi, were driving behind a Claiborne County school bus when they noticed it was giving off black smoke. They made several attempts to get the bus to pull over but were unable to get the driver’s attention. Eventually, they pulled their car in front of the bus, forcing it to stop.