>> five years ago in iraq, army sergeant jason lisi was dropping iraqi prisoners off at a base south of baji, driving in his humvee. his unit was heading back to home base. then it happened. >> my humvee was struck by a suicide car bomber. >> we have seen the blast by car bombers in iraq before. the fireball from this one envelopes his humvee. >> burns over 20% of my body. which resulted in the amputation of all the fingers on my left hand and left ear. >> he was flown back to states and spent 13 months at brook army medical center in san antonio. after multiple surgeries, physical therapy, and prosthetic hand, leisi was ready for something. but he didn't know what. >> i really didn't have direction. i knew i wanted to go back to college and finish my degree. i knew i wanted to get a degree in finance. but then, you know, an opportunity like the wall street war fighters became