More On Domestic Terrorism

Defense Secretary Ashton Carter joined warnings from other agencies of the potential for an ISIS terror attack in the U.S...

Trump and Clinton took different tacks in the wake of the deadly attack, while some retired generals called for more gun...

Four Marines were shot and killed Thursday morning in a shooting at two military facilities in Chattanooga, Tennessee.

A U.S. Army Reserve officer was among those killed in the deadliest mass shooting in U.S. history.

Authorities are investigating trips the gunman took to the Middle East as they work to identify the motive behind the...

An Army officer was shot and killed in the Orlando nightclub while a Marine veteran of Afghanistan helped others to escape.

A Navy officer and one of the Marines murdered in last week's attack in Chattanooga fired their personal weapons at the...

Imran Yousuf, a former Marine who served in Afghanistan, was working as a bouncer at the Pulse nightclub when he heard...

The nation marked the 14th anniversary of the 9/11 attacks with messages of remembrance and resolve to prevail over terrorism...

A second U.S. military victim has been identified among the casualties of the deadly shooting at an Orlando nightclub.