A fourth of July parade in Highland Park, Ill. quickly turned into panic after a gunman opened fire on the crowd. Six people were killed, and dozens more were injured. Mike Armstrong reports on the chaos that ensued and what witnesses saw. UPDATE: Police say the person of interest is in custody.
- Man accused of killing 7 in Chicago-area July 4th parade shooting pleads not guilty
- Highland Park community in ‘unbelievable shock’ after deadly July 4 shooting