Via Fox News:
One of the four U.S. Marines killed by a Muslim extremist in an attack on a Tennessee military facility was identified as an Iraqi veteran and Purple Heart recipient from Springfield, Mass.
Gunnery Sgt. Thomas Sullivan, 40, a Marine since 1997, was one of those killed Thursday by Mohammad Youssef Abdulazeez, 24, a Kuwaiti-born Chattanooga resident who was killed near the scene.
More info and pics on Sgt. Sullivan.