More On Domestic Terrorism

An Air Force claim that active-shooter incidents can be halted by armed citizens before police arrive isn't supported by FBI...

An active duty Army soldier was arrested Saturday by the FBI in Hawaii on terrorism charges for alleged connections he had...

The American who committed the deadliest mass shooting on a US military base was an Islamic extremist with "a suicide wish."

All piers at Naval Station Norfolk in Virginia have been cleared after five bomb threats came in around on Wednesday morning...

Ten months after a gunman opened fire in Chattanooga, Tennessee, the Corps is still working to bolster the security of its...

The gunman was identified as Omar Mateen, born in the U.S. to parents of Afghan origin and was a Muslim, Fox News confirmed.

The shooter responsible for the deadliest mass shooting in U.S. history had pledged allegiance to ISIS, a lawmaker said.

Orlando police credited a Kevlar helmet with saving the life of an officer who responded to deadliest shooting in U.S...

The U.S. must be prepared for more attacks by ISIS-inspired loners as the group's battlefield losses mount, officials say.

House and Senate Republicans were locked in an escalating standoff Friday over legislation reining in the National Security...