Shamsud-Din Bahar Jabbar, the driver who caused the New Year's Day terrorist attack in New Orleans, appeared to lead a quiet life while undergoing a "radicalization" by ISIS.
Jabbar's friends and families are trying to come to terms with how a man described as "quiet, reserved, and really, really smart" would descent into terrorism, killing 15 people and injuring dozens more by ramming a pickup truck into a crowded Bourbon Street.
