Thirty years after a truck bomb detonated outside a federal building in America's heartland, killing 168 people in the deadliest homegrown attack on U.S. soil, deep scars remain.

During an April 15 appearance on the 'Today' show, James Brolin reflected on his long-lasting marriage to Barbra Streisand.

Counterterrorism agencies are grappling with a new generation of extremists who are younger than ever and have fed on ultraviolent and potentially radicalizing content largely behind their screens.