Meet one of four Colorado-based athletes representing the United States Air Force in this year's Warrior Games in Colorado Springs. Master Sgt. Michael Christiansen, a protocol office superintendent at Peterson AFB: 21st Space Wing, lives with pain on a daily basis because of a fractured and shifted vertebrae of his lower back from an explosion in Iraq in 2004. Watch MSgt. Christiansen and his fellow wounded warriors from all over the world come together to compete.