Gregory Dimitri Gadson (born February 19, 1966) is an American actor, motivational speaker, retired colonel in the United States Army and former commander of the U.S. Army Fort Belvoir garrison. He is also a bilateral above-the-knee amputee. He served in the U.S. Army for more than 20 years as a field artillery officer and served on active duty for Operations Desert Shield and Desert Storm, Operation Joint Forge, Operation Enduring Freedom, and Operation Iraqi Freedom.