Without Fail (Jack Reacher);

Jack Reacher takes aim at the White House in the sixth novel in Lee Child€s New York Times bestselling series.
 
Skilled, cautious, and anonymous, Jack Reacher is perfect for the job: to assassinate the vice president of the United States. Theoretically, of course. A female Secret Service agent wants Reacher to find the holes in her system, and fast€"because a covert group already has the vice president in their sights. They€ve planned well. There€s just one thing they didn€t plan on: Reacher.