A D.C. firefighter under investigation for nearly a year has been indicted on second-degree murder and manslaughter charges. Gregory Bowyer Jr. is accused of running over and killing 21-year-old Nate McKinnon last February with his SUV in an Upper Marlboro shopping center parking lot. At the time, police said Bowyer and his daughter had been following McKinnon and his mother while calling 911. On the night before McKinnon was killed, he was allegedly involved in a dispute with the firefighter’s daughter. Police said guns were pulled during the incident and one man was arrested and charged with assault. For reasons still unclear, McKinnon was not arrested.