Despite the death of Osama bin Laden, the Islamic terrorist threat against America is far from over.

The trove of intelligence recovered during the May 1 raid on bin Laden's Pakistan lair indicates al Qaeda may be shifting its focus to smaller American cities nationwide.

The terror kingpin also encouraged his followers to target trains.

"The counter-terrorism community is now clearly looking at the mid-sized operations as they were designed and called for by bin Laden in his captured diaries as the future for al Qaeda and the jihadist movement in America," Walid Phares, author of the book Future Jihad, told CBN News.

He said the terrorists who carry out these new attacks could very well be born and bred in the U.S. and have no direct ties to al Qaeda.

"The other non-connected jihadists, the lone wolf jihadists, who are connected ideologically but not organizationally, these are the most dangerous because we have no way to detect them…before they make their intentions known and start to act," he explained.

Already, terrorism arrests made since bin Laden's death include two New York Muslims charged with plotting to attack synagogues and two imams from a pair of Miami mosques charged with supporting the Pakistani Taliban.
 
CBN News Terrorism Analyst Erick Stakelbeck, author of the book "The Terrorist Next Door," talked more about the threat of homegrown jihad .  Click play to watch.