As David Brancaccio winds down his tenure as host of the "Marketplace Morning Report," he's speaking with places of work he might have ended up at if he weren’t a broadcast journalist. On today's show, we head to Bike Oven in Los Angeles, a co-op that aims to give you everything you need to learn how to fix your bike yourself. But first: an examination of oil prices and potential tariffs on countries sending weapons to Iran.