FROM CNN's Jack Cafferty: So let's recap: A man's father in Nigeria goes to the U.S. embassy warning that his son has "become radicalized," that he went to Yemen to be part of "some kind of jihad" and he's concerned his son might want to do us harm. This is called a clue. [cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2010/images/01/07/art.plane.window.jpg … Continue reading How safe do you feel when flying?