The SURGICAL STRIKE UNIT (SSU) SERIES
The Surgical Strike Unit (SSU) is a privately run special operations group. It was founded by Ryker, a Vietnam veteran, to handle the national security jobs that the government couldn't—or wouldn't—do.
A government program attempted to turn men into superhuman soldiers and spies.
Those who survived were barely human.
Now key players want to revive the program, using the data contained on a stolen microchip.
If the SSU doesn’t stop them, a deadly, and unstable, army of superhuman soldiers will be unleashed on the world.
Musical Note: When I first heard "Citizen/Soldier" by 3 Doors Down I immediately thought of the men and women of the SSU.
Amazon has also bundled Vengeance, Betrayal, Retribution, and Aftermath together. If you already own one of the books, Amazon will charge you only for the books you don't already own.
Here's the link: SSU Bundle.