Transcript for US Army Veterans Connected Through Combat Rescue
And finally, on this veterans day, we salute our American heroes. When the U.S. Army master sergeant you're about to meet was shot in Afghanistan, it was a fellow sergeant that helped save his life. But that's just the beginning of a story you won't soon forget. ABC's Michael Strahan brings us inside their incredible bond. One look at mark and SHAWN, and you'd never know what they've been through. The elite green berets, protecting the most dangerous corners of the world. On may 31st, 2009, it was one mission that challenged their faith and sealed their bond. Where were you both on that day? We were in southeast Afghanistan. We targeted a Taliban commander. We knew he was there that day. We rolled out, we ran into a hornet's nest, really. I round the corner, that's when Se SHAWN kicked the door. Guy point blank took his ak, he shot right up SHAWN. Shawn, gravely wounded, visions of his wife and sons flashing before him. I'm just thinking -- lord, let this be a dream. Just please, lord, let this be a dream. The vision of those boys and trying to fight back to get back home to them and to my wife, to my family. Bleeding out, SHAWN approaches his final breath. That's when mark, a medic, takes charge. Diving through bull lets to treat SHAWN's wounds, convincing a medevac pilot to defy his orders and land inside the fire fight. Mark's obviously my hero of the day. As are a lot of the guys on the team. Reporter: The mission over, SHAWN's personal battle just beginning. Over 20 surgeries and five months. His room at Walter reed medical center, the new fox hole. In our minds, we think we're these big bad green berets, and to be to the point where I can't even sit up under my own power, that was a pretty humbling experience. Shawn finding his strength. His long road to recovery ending at a marathon=yk< finish line. I took the next nine months plus and went from kicking the walker away to dropping the cane and walking and jogging and then October 2010, I finished that marathon. I couldn't run a marathon, period. It wasn't just for me. These guys risked their lives, so, the best thing I can do is get back up on my feet and that's my thank you back to them. For "Nightline," I'm Michael Strahan in New York. Wow. Do you want to honor a vet? We want to hear from you. Leave your message of thanks on our Facebook page and use #honoravet. Thank you for watching ABC news. Tune into "Good morning America"
This transcript has been automatically generated and may not be 100% accurate.