these servicemen and women who once fought side by side will be competing against each other. >> being laysiest has not been an option in our life. >> reporter: army specialist david oliver is ready, so is marine captain jonathan disbro. >> this whole experience has been an eye opener to are me. >> reporter: the experience, the warrior games, an olympic style competition for wounded service members. [ cheers and applause ] david oliver lost his right arm during a humvee accident in afghanistan two years ago. jonathan disbros's right leg amputated. >> there were several surgeries in six months. >> the challenge is there, it presents itself to you so you can either accept that limitation or take that challenge and overcome it. >> reporter: there are more than 200 others here eager to show how they've overcome their