After the attack in Nice, where a rented truck was used as a weapon to commit mass murder, authorities in the U.S. are ramping up security efforts, especially around events that draw large crowds. Andrea Canning reports.July 16, 2016
The Bastille Day Attack: A Dateline Special
01:25
The Bastille Day Attack: The Fateful Day in Nice
09:02
The Bastille Day Attack: Witnesses to Terror
04:41
The Bastille Day Attack: Fighting for Every Life
02:31
The Bastille Day Attack: Delivery Driver to Murderer