Prosecutors said Swigger was on his way to work and dressed in civilian clothes on Nov. 20 when a 50-year-old man changed lanes in front of him. Swigger responded by honking and driving after the other vehicle for more than a mile. He then drove up alongside the other man’s car and suddenly swerved in front of it, forcing the driver to come to an abrupt stop. Prosecutors said Swigger then got out of his car in the middle of the freeway during rush hour traffic, approached the other driver and pointed a gun at him. Swigger identified himself as...