I agree. If they turn on the TV and Brokaw, Jennings and Rather have just disappeared without explanation, the terrorists would panic. No question about it.
How about we put those 4 in Orange Jumpsuits and have CNN televise their beheading after we show them being liberally covered in pig's blood! Oh yes, and let's get the Village People reunited for a chorus of "YOU'RE GOING TO GO TO - H.E.L.L. (singing the YMCA tune)"