Prometheus's Child — Harold Coyle; Barrett Tillman

In this explosive series from New York Times bestseller Harold Coyle and noted military author Barrett Tillman, a new type of war is being fought by private paramilitary companies at the beck and call of the highest bidder. With the military and intelligence agencies spread thin, the United States is constantly calling upon the services of these organizations--and Strategic Solutions Inc. is among the best.
What begins as a relatively simply military-training mission in Chad turns into a high-stakes game of nuclear brinkmanship as the men and women of Security Solutions, Inc. stumble across a plot to extract and ship yellowcake--the base fuel for a nuclear weapon--to any number of countries hostile to the US. The in-country force tracks the operation to a supposedly abandoned remote mine in the desert.They strike, but a convoy carrying the yellowcake shipment escapes their trap.
With time running out, the SSI teams must pull together like they never have before to find a ship in international waters and recover its deadly cargo--by any means necessary.