Eyes of the Hammer, by Bob Mayer

This novel features US special forces military characters.  The hero is warrant officer Riley, sent to kill a Columbian drug lord at the behest of the Columbian president.  What would this genre be without a beautiful and capable female agent at Riley's side? Enter CIA agent Westland.

Action and adventure ensue.   It isn't bad.

Eyes of the Hammer (The Green Berets Book 1)