Irene Winstead has been driving a school bus for 20 years in Maryland's Montgomery County. This year she and her fiance Kenneth Lee, who is also a school bus driver, are retiring.

For many of the parents of the students she drives, it's a sad moment. Some of the kids she drove are now in college and for the neighborhood, it's the passing of an era. We listen in on her last day on the bus and hear from parents about why she made their life so special.

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