“Am I going to roll?” Eric Hill, 57, asks himself out loud every time he parks his truck on a slant. It’s a stick-shift, and he has no emergency brake. After he rocks back and forth in his seat to make sure it’s secure, he sometimes puts a piece of cinder […]

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Before Brian Dyroff can answer a question, he has to pull his earplugs out. With a pinch in each ear, he eases out two small purple pieces of foam, shaped like miniature grain silos. The earplugs go into a small plastic carrying case that he slips into his pocket. But […]