The contractors / Harry Hunsicker.

Enhanced descriptions from Syndetics:

Private military contractors. They're not just for foreign wars anymore. Jon Cantrell, a disgraced ex-cop, works for one such company. He's a DEA agent paid on a commission basis, patrolling one of the busiest drug-hubs in the country: Dallas, Texas.

When Cantrell and his partner and sometimes lover confiscate the wrong shipment of drugs, they find themselves in possession of a star witness in an upcoming cartel trial that could destroy the largest criminal organization in the hemisphere.

To turn a profit, all they have to do is safely deliver the witness to the US Attorney on the other side of the state. An easy trip, except the witness doesn't want to go and a group of competing DEA contractors and a corrupt Dallas police officer want everybody involved dead.

This heart-stopping thriller takes readers deep into a strange underworld where the lines between government officials and mercenaries blur. In this complex network of drug traffickers, cartels, politicians, and police, no one's hands are clean.