Locked On by Tom Clancy and Mark Greaney is the sequel to the novel Dead or Alive (reviewed here). It is the third novel in the Campus series, which deals with the wildly implausible off-the-books assassination squad assembled by Jack Ryan when he's President that employs his son. The Campus doesn't answer to its liberal President, Ed Kealty (boo!), but their own sense of justice (yay!), while doing all manner of illegal things which would technically qualify them as terror...