The Cartels' Error: Book Four of the Cody Hunter Series (Paperback) (ISBN-13: 9781543449860)

The three partners played havoc with two large cartels outside Bogota. The narcos lost all confrontations while their plantations and building burned.
Two years later the cartels' new owners learned the three notorious men lived in the U.S.A. This time they spared no expense. They hired mercenaries known for brutal murders to go after the three partners. They did go after them and almost won.