The Titan Protocol

A special ops mission in Nigeria falls apart when the raiding force sustains massive casualties from a rogue drone strike. It's another dead lead for the CIA's operation to uncover an international arms smuggling ring and prevent a cache of state-of-the-art AI weapons from ending up in terrorist hands.
The one person neither the CIA nor the smuggler counted on was Isaac Northe, recovering alcoholic and former special forces.
Isaac breaks into corporate installations for a living. A job for a defense contractor places him in the middle of the hunt. He will need all his skills to survive the assassin and army of mercenaries sent to erase the trail.