Chief Master Sgt. Christopher Cosher, 176th Aircraft Maintenance Squadron superintendent, marked 37 years of service during a July 20, 2018, retirement ceremony at Joint Base Elmendorf-Richardson. Cosher has experience in maintaining F-15 Eagles, HH-60G Pave Hawks, C-130 Hercules and HC-130 Combat Kings. (U.S. Air National Guard photo by David Bedard)