LAKE MILTON, Ohio - Bob Blocksom, an 87-year-old former insurance salesman, needs a job. He hasn’t saved enough money for his retirement. And trucking companies, desperate for workers, are willing to give him one. Age didn’t matter, they said. If Blocksom could get his “CDL” - commercial driver’s license - they would hire him for a $50,000 job. One even offered to pay his tuition for driver training school, but there was a catch: Blocksom had to commit to driving an 18-wheel truck all over America for a year. So far, that has been too big of an ask for...