Counterterrorism agents believe al Qaeda has changed tactics a little, training women for the first time in Yemen.
'Al Qaeda is looking to put together an attack using people that would not fit a profile that we'd be looking for," said Richard Clarke, ABC News Counterterrorism Consultant.
Counterterrorism officials tell ABC News they received the information from the accused Northwest Airlines bomber, Umar Abdulmutallab.
We've also learned that last weekend; six different people on the no-fly list were stopped from boarding U.S. flights.
Some law enforcement officials believe the suspects appear to be part of a well organized probe to find weak spots in the airline security system.
