Sister of Dallas Gunman: 'I Keep Saying It's Not True'

Dallas Gunman Identified as Micah Xavier Johnson, Who Had No Record: Report

Teen's Leg Is Amputated Below the Knee After He Stepped on Explosive in Central Park

Teen Arrested For Terror Threats Against Government Buildings in Two Arizona Cities: FBI

Grin of 3 Devils: Chilling New Photo of Suspected Istanbul Bombers Shows Them Smiling Before Attacks

America's Airports Remaining Vigilant Following Turkey Attack and Bomb Scare at JFK

White House, Trump, Clinton Weigh In on Turkey Massacre

Footage Reveals Grim Scenes From Inside Turkish Airport During Attacks

Porn-Sniffing Dog Becomes First Electronic Detection K9 Officer in the West

Mother Defends Armed Trio Arrested at Holland Tunnel: 'They Wanted to Bring a Girl to Safety'