Back in 2011, Jon Penland was selling centrifugal pumping units into the water and wastewater markets — a job as glamorous as it sounds. He was good at it, but nine hours a day in a gray cubicle left him restless. “There has to be a different way to live,” he told his wife one afternoon while driving home from vacation. That itch for change set him on a course that would eventually land him…

Source