At age 22, Jason Kimbrell rode in the back of ambulances in Okaloosa County caring for patients in critical condition. It was his first job after serving four years in the military as a firefighter and paramedic. "How in the world can a guy who barely graduated high school with a GPA of 1.5 and was sleeping on his girlfriend's couch end up being the CEO for a Fortune 100 company?" Kimbrell, now the chief executive at HCA Florida Palms West Hospital, asked with a laugh. "It's not the dog in the fight, but the fight in the dog."