By Jamie Gumbrecht, CNN
(CNN) - The drama began last week when a gunman boarded a Dale County, Alabama, school bus, shot and killed the driver and grabbed a 5-year-old boy. It ended days later with the boy, Ethan, rescued from a bunker where he was held hostage, and his 65-year-old abductor dead.
Now that Ethan is safe, even celebrating his 6th birthday this week, officials are poring over the details of how the case unfolded, starting on the school bus.
It played out over 4½ minutes, a scene captured by a camera mounted at the front of the bus. It's a security measure common on buses now.
Witnesses and officials who reviewed the recording said Jimmy Lee Dykes boarded the bus with a gun and handed a note to the driver demanding to take several children. The driver, Charles Poland, refused. He stood, placing himself between the gunman and the students.
Meanwhile, older students opened an emergency exit on the back of the bus and ran away from the bus. They knew what to do: Twice-per-year emergency drills reminded them how to evacuate.
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Nearly 45 million kids ride the bus daily during the school year. Annually, dozens of bus accidents put kids in danger. A group of elementary school students learns important steps to school bus safety that can save lives. (From HLN Weekend Express)