The Second Option by Lora Moore. $3.99 from Smashwords.com
Marine Sniper Chance Hughes was a born fighter. After being shot down by the enemy in Afghanistan and tortured, Chance was rescued and introduced to his new life as a covert assassin. Although convinced that hunting down terrorists is his destiny, he’s haunted by violent memories that create a struggle within himself. A job in Moscow forces Chance to face the reality of his future.

Only at smashwords.com where it’s free to join.