we begin with breaking news. new evidence tonight that the san bernardino killers were radicalized for some time. that is according to the fbi. which tonight is also revealing that a bigger plot to kill may have been in the works. also new tonight, we are learning that an additional 19 pipes which could easily have been turned into bombs were found in the apartment belonging to syed farook and his wife, tashfeen malik. we are learning that the couple practiced their shooting skills at a firing range and practiced together days before the massacre. this is when they came into the united states in july of 2014 from saudi arabia. malik and farook are going through customs at o hare international airport in chicago when they came back from saudi arabia. in a moment i m going to speak exclusively to the attorney representing farook s family, but first, i know we re learning more about the shooters. reporter: much more, especially through the fbi revealing some key things in