Zach D. Hartel has been promoted to the rank of staff sergeant in the U.S. Air Force.
Staff Sgt. Hartel is a munitions systems superintendent assigned to the 49th Wing at Holloman Air Force Base, N.M. The new staff sergeant has served in the military for five years.
He is the son of Robin and William Hartel of Highway 57, Sturgeon Bay.
Hartel graduated in 2004 from Sevastopol High School, Institute.