The alert, issued to retired service members who served in Iraq or Syria and live in Florida, did not specify what kind of threat or which terrorist group was involved.

The intersection of emerging technologies, resource constraints, and evolving terrorist tactics creates an unprecedented challenge for homeland security. As experts noted, the threat landscape will ...

The Department of Homeland Security is particularly focused on the threat posed by lone wolf attackers, individuals who act independently and unpredictably.

"We are enhancing security measures and coordinating intelligence-sharing to proactively address potential risks," a DHS spokesperson told Newsweek.