The Department of Homeland Security and the FBI are concerned about the potential for copycat attacks from the New Orleans ...

Former Secret Service agent discusses enhanced security protocols for Fourth of July celebrations across the country amid ...

In a joint bulletin, the FBI, Department of Homeland Security and other law enforcement agencies said individuals or small ...

A lone wolf actor poses the biggest threat to Fourth of July celebrations in New York and San Francisco, according to ...

Intelligence bulletins sent out ahead of the holiday warn of copycat attacks and homegrown extremists targeting July 4 ...

Attacks perpetrated by lone actors are the biggest terrorism threat to July 4th festivities in New York City and elsewhere, ...

Just one month before that massacre, the FBI and DHS warned about the threat of violence from lone offenders and the potential use of vehicle ramming, according to two internal memos obtained by CNN.

Lone wolf actor biggest threat to 4th of July festivities in New York, San Francisco: FBI, DHS bulletins Intelligence bulletins warn of copycat attacks, homegrown extremists.

A lone wolf actor poses the biggest threat to Fourth of July celebrations in New York and San Francisco, according to multiple intelligence bulletins obtained by ABC News.