The Bodyguard - The Nate Thrower Series, #1

Nate Thrower is in Mexico, barely finished with one job when another one literally shows up at his doorstep. He's hired by Manuel Ortiz, a wealthy CEO who's been receiving threats. The threats soon escalate into violence, with everyone in Ortiz' family now directly in danger. People are getting hurt. With things spiraling out of control, Thrower makes a call to an old friend to help him out of the jam.
Together, they'll Silence their opponents and eliminate the threat.