Krisa Walls, left, and Tish Libertino, right, both operate snow plow truck for PennDOT District 12 for Fayette County. The two former bus drivers have shifted gears to drive and operate snowplow trucks for the Pennsylvania Department of Transportation. Walls of Georges Township was looking for a job to bring in a second income into her home when she decided to apply. The stay-at-home mom raised three children over 20 years, and her last job was driving a school bus. (Mark Hofmann /Herald-Standard via AP)
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