http://www.audible.com/adbl/site/products/ProductDetail.jsp?productID=BK_BRLL_000148&BV_UseBVCookie=Yes
Starting book: Deep Black; Payback by Stephen Coonts & Jim DeFelice.
Publisher's Summary
The word is out to ex-Marine sniper Charlie Dean and his crack National Security Agency team: infiltrate the highest stratum of Peruvian political power and derail a renegade general from acing an election. All Dean has to do is find a way inside an impenetrable bank vault protected by armed guards around the clock - all in a day's work for the men and women of Deep Black.
But things get complicated when Dean and company discover the renegade general's second plot. The military madman's ruse: a nuclear weapon he claims is in the hands of Marxist guerillas, a bomb that only he can rescue - and control.
When the general and his plot are exposed, the NSA concludes the threat is over. But in fact, it's only just beginning.
12 hrs and 12 mins