USAF Volunteer Service Pin with 100 Hour Bar – Air Force FS Lapel Badge

This is a USAF (United States Air Force) Volunteer lapel pin with the letters FS (likely for Foreign Service or Field Service) in front of a globe design. The word VOLUNTEER appears on a blue banner at the bottom. Attached by a short chain is a rectangular bar with 100 on it. These bars usually indicate a milestone—often representing 100 hours of volunteer service (sometimes blood donations, depending on the program, but in USAF volunteer insignia, it typically refers to service hours).