Flashpoint by Suzanne Brockmann

Jimmy Nash has already lived two lives--and he can’t talk about either of them. Formerly an operative of a top secret government agency, he has found a new job with a shadowy company called Troubleshooters, Incorporated. Created by a former Navy SEAL, Troubleshooters, Inc. helps anyone in desperate need--which provides a perfect cover for its other, more perilous objective: covert special operations. Now Nash and a quickly assembled team of expert operators have come to the earthquake-ravaged country of Kazbekistan in the guise of relief workers. There, amid the dust and death, in a land of blood red sunsets and ancient blood feuds, they must track down a missing laptop computer that may hold secrets vital to national security.