It's Not Wise To Piss Off The Devil (HALO)

This is the fourth in a Jeff Barkil adventure series. Jeff Barkil, an Ex-Airborne Ranger and former Vietnam era CIA BLack Ops Agent comes out of retirement to take on a Mexican Drug Cartel in the jungles of the Yucatan as well as a traiterous Federal Agent to rescue the daughter of a former CIA friend.