Bike-Path Killer Sayfullo Saipov Remorseless During Sentencing Hearing

90 Bodies Found at Kenya Cult Where Followers Starved to 'Meet Jesus'

Woman Pleads Guilty to Mailing Ricin to President Trump in 2020: Feds

How Some Passengers on Frontier Flight With Box Cutter-Armed Man Prevented Any Violence From Being Carried Out

What We Know About US's Mission to Take Out Ayman Al-Zawahiri

Terrorist Gunman Killed by Israeli Security Forces After 9-Hour Manhunt 

How to Identify 'Incel' Behavior Before It Escalates Into Mass Violence, According to the Secret Service

How an Unlikely Source Took Down the Mad Bomber Who Terrorized New York City for Nearly 17 Years

Kansas Mom and Former Teacher Is Allegedly a Radicalized ISIS Soldier: Prosecutors