Cutthroat Express (Zombie Apocalypse: Chad Halverson Series Book 7)

A motley team of warriors on a secret mission organized by the president of the United States take on infected flesh eaters in a nuclear wasteland, risking their lives in a convoy of three specially armored black Chevy Suburbans to obtain a vaccine against the apocalyptic zombie plague that is wiping out the human race. In exchange for presidential pardons a serial killer, a cannibal, a cop killer, and a murderer volunteer to go on a suicide mission spearheaded by an elite cadre of Special Forces operatives, including CIA black ops agent Chad Halverson.