A U.S. Army sergeant 1st class whose group is based in Fort Carson, Colorado was killed Saturday in Afghanistan in the line of duty, the Department of Defense said. Sgt. 1st Class Stephen B. Cribben was 33 years old and originally from Simi Valley, California. He was killed in the Logar Province as part of a combat operation there. He was assigned to the 2nd Battalion, 10th Special Forces Group, the DoD said. He enlisted in the Army in 2002 and had just started a tour in Afghanistan. Cribben was a Special Forces Comm Sergeant who earned the Bronze Star Medal, nine Army Achievement Medals, five Army Good Conduct Medals, the National Defense Service Medal, and many other commendations.