Oh, yes, I'm thrilled to share this with all of you. This is a story of healing from wounds of war especially the psychological wounds, a terrific organization called the warrior canine connection... See More
Oh, yes, I'm thrilled to share this with all of you. This is a story of healing from wounds of war especially the psychological wounds, a terrific organization called the warrior canine connection helps do this by bringing together wounded soldiers and man's best friend and I recently sat down with two soldiers whose lives were changed by one very special dog. Justin Lansford and his girlfriend love doting on their golden retriever but there's much more to this four-legged friend. What does he mean to you. The less I use my chair, my wheelchair, the more I need his help in small tasks and the more he's there, it's been very comforting to know that. Reporter: Can you tell me about your injury? How it happened? I was a paratrooper in the 82nd airborne and we were in eastern Afghanistan and 2012 we struck an ied and it ripped my truck completely. I had to have my right leg amputated. Reporter: He was introduced to the warrior canine connection. What are some things you couldn't do before Gabe. There were things more significantly different. I have a prosthetic lubricant. He'll run and grab my spray so I can put my leg on. What a good boy. From there it just kind of snowballed helping me with one thing to the next. He can help me to and from the ground. I can use him as kind of a brace and I can lean on him to get on to and off of the ground. Reporter: Gabe is always at the ready and it begins from the minute Justin comes home. How does he help you get in and out? Well, he can open the door. Come here, Gabe. Here. Get the door. Good boy. Good boy. Good boy, Gabe. Every day. Good boy. Anything you need. Everything I need. Reporter: At 2 years old he's been working with him as a service dog for five months. He isn't the first life he has touched. Dismount patrol in afghanistan/pakistan border I see a kid, 15 years old. Suicide bomber. Knew what it was. Reporter: What do you remember from that moment? I just remember a big, you know, loud noise, you know, big flash and I remember landing. To help with his posttraumatic disorder his doctors suggest he work with a puppy named Gabe a candidate for the warrior canine connection. It was hard to go back into public without being on edge that it made others uncomfortable. In training Gabe, it really helped heal you. I ended up going with Gabe on the metro. Could you have done that without Gabe? Not a chance. And, you know, it's funny so we went on the metro, we went to a grocery store, by the time I got done with the grocery store I remember sitting there and talking to a couple people that I was with and myself more or less myself like I just did that. We're involving the service members in the process of training the dogs and through that process, they're teaching the dog that the world is a safe place to incorporate that same notion that the world truly is a safe place in the civilian world. Reporter: Spencer hasn't seen Gabe since he finished training and become Gabe's service dog but this day he traveled from Maryland to Colorado. The two met who had never met sharing such a special bond. Look at you. Look at you. So handsome. Reporter: It's pretty remarkable to think that one dog could have such an impact on two lives. I owe everything to Gabe. I mean, I would jump in front of a bus for Gabe in a heartbeat, you know, and I know he would do the same for me. I know he would do the same for Justin so that's the kind of connection you have. I never had a chance to say thank you to Spencer for working with Gabe and getting Gabe to a point where he could work and help me and being able to see Spencer face to face has been awesome. I want to say thank you to both of those men for letting us into their lives and Spencer was really sad to leave Gabe but he knows they're a family now and they will forever be bonded by Gabe and what he's done for both of their lives. This program is unbelievable. They have a new litter of puppies coming out. You can go to their website and look at the puppies and support them in any way you can. That's good. Thanks for bringing us that story. Just incredible. That's all on goodmorningamerica.com on Yahoo! I hope my dogs were watching.
This transcript has been automatically generated and may not be 100% accurate.