Terror threats/Targeting infrastructure

The terror attacks in Paris have renewed a sense of insecurity among residents of major U.S. cities. One of the latest Islamic State threats calls on its supporters to target and bomb key U.S. targets, including public transportation hubs, and even police stations.

Law enforcement officers in New York have been ordered to remain vigilant. “Pay close attention to people as they approach and look for their hands as they approach you,” reads an internal New York Police Department safety memo which the Daily News obtained.

As DHS officials focus on assuring the American public that security agencies remain on high alert, last week’s incidents on two of the nation’s major metropolitan rail systems raised more concerns about public safety and preparedness.

Terror attacks on rail systemsby domestic terrorists: a major U.S concern