How does the author use foreshadowing in Clear and Present Danger?

In Chapter Eight, the description of the relationship between Cortez and the Cartel Chieftain Escobedo is developed further. Cortez is very accurate in his assessment of Escobedo as a man who is capable of instant action and decision. This foreshadows the assassination of the Director of the FBI and the ensuing catastrophic escalation of the covert operations and explains the basis for the murder aboard the yacht.