Soft Target by Stephen Hunter

The first in the Ray Cruz series is just fair. They mention his father, Bob Swagger, but he doesn't play a role. PW: Recently retired marine sergeant Ray Kruz has been talked into a mall trip by his fiancé, the beautiful Molly Chan. For Ray, Molly represents a way to reconnect with normal life, something his 20 years in the service and five tours in two combat zones have prevented. But now he finds himself in the middle of the softest target of all, a huge consumer mall where a self-styled “Mumbai Brigade” has come to bring massive death to the heartland.