More Americans are turning to radical CNN , U.S. counterterrorism officials say . Homeland security secretary : This is a `` paradigm shift '' since the days just after two . Times Square bomb suspect Faisal Shahzad allegedly trained in U.S. . His case is similar to that of Faisal Shahzad , subject of CNN 's `` Jihad Jane
More Americans are turning to radical Islam , U.S. counterterrorism officials say . Homeland security secretary : This is a `` paradigm shift '' since the days just after 9/11 . Times Square bomb suspect Faisal Shahzad allegedly trained in Pakistan . His case is similar to that of Bryant Vinas , subject of CNN 's `` American al Qaeda ''