Hunter killer
(Book)

While Pike Logan and Jennifer Cahill prepare to join their team on a counter-terrorist mission in the triple frontier-- the lawless tri-border region where Argentina, Brazil, and Paraguay meet-- they are targeted in Charleston, South Carolina. A vicious explosion kills a friend, and the perpetrators have set it up to look like an accident. When he loses contact with the team in South America, Pike is convinced the Taskforce are under assault. Investigate their disappearance, Pike and Jennifer run headlong into a crew of Russian assassins, and are entangled in a scheme involving Brazilian politics and a cut-throat battle for control of offshore oil fields. -- adapted from jacket