A source tells MPR News a grand jury convened in connection to the shooting of three Burnsville first responders and straw purchasing may be involved. And Duluth is being left in the dark as billionaire Kathy Cargill buys up properties in Park Point. The North Shore relies on seasonal tourism but the pandemic and unusual weather have slowed things down. And March is off to a warm, dry start, but it may be cooling down soon. MPR's chief meteorologist gives us the latest. Plus, the first Black woman jockey is remembered in a middle-grade book written by her brother, who will be in the state to talk to a nonprofit helping kids find confidence through horses.