Fort Bragg Master Sgt. Nathan Goodman, 36, from the Chicago suburb of Lansing, Ill., died near Eloy, Ariz., officials said.
"Nathan was a beloved member of 3rd Special Forces Group and an exceptional leader in the Special Operations community," Col. Nathan Prussian, commander of the 3rd Special Forces Group's 2nd Battalion, said in a statement.
He became the third U.S. military fatality from the Chicago area in less than two weeks.
Previously, Private First Class Miguel Villalon, 21, of Aurora, Ill., was one of two soldiers killed Saturday in Afghanistan’s Kandahar Province.
Earlier in January, Army Specialist Henry Mayfield Jr. of Hazel Crest, Ill., was among three Americans killed when Al-Shabab extremists attacked a base in Kenya where U.S. and Kenyan troops were stationed.