Tom Clancy's Net Force: Changing of the GuardBy: Steve Perry, Larry Segriff Series: Tom Clancy's Net Force The eighth novel in Tom Clancy's #1 New York Times bestselling Net Force series. Though the head of a major multinational corporationand a key player in world affairsSamuel Walker Cox has a past that few people know about. But that group is about to get bigger. A computer disk has fallen into the hands of the Net Force, outing the powerful American businessman as a former Russian spy. Cox