When Jeff Bauman woke up on Tuesday, April 16^th, 2013 in the Boston Medical Center, groggy from a series of lifesaving surgeries and missing his legs, the first thing he did was try to speak. When he realized he couldn't, he asked for a pad and paper and wrote down seven words: "Saw the guy. Looked right at me," setting off one of the biggest manhunts in the country's history.

Just thirty hours before, Jeff had been at the finish line of the 2013 Boston Marathon cheering on his girlfriend, Erin, when the first bomb went off at his feet. As he was rushed to the hospital, he...