After Dale Beatty, right, lost his legs in the Iraq war, his community thanked him for his service by helping him build a home. To pay it forward, Beatty co-founded Purple Heart Homes, which has helped build or modify homes for dozens of disabled U.S. veterans. "We wouldn't leave someone behind on the battlefield," Beatty said. Why would we do it at home? One of this year's top 10 Heroes will be named CNN Hero of the Year and receive $250,000 to continue their work. Cast your vote now!