A major in an unmarked car witnessed how an armed 19-year-old man and a driver attempted to ambush another driver in an expressway in Miami-Dade, records show.

A day after a man brandished a gun at a vehicle in Northwest Miami-Dade, two men were arrested, deputies said. Junior Jeannoel, 19, and Wentz Toussaint, 20, were charged with aggravated assault with a firearm and accessory after the fact, respectively.