"Vietnam Vet Recalls Service" [audio 2 min 7 sec]

Retired Army Lt. Col. Michael Sternfeld, 62, is an Amtrak conductor at Washington's Union Station. Many of his passengers don't know that he served as a sergeant in Vietnam. Years later, he fought as an Army reservist in the Gulf War, and in 2005 he was back with the Army in Iraq, where he injured his left leg.