This U.S. Air Force study reference, dated 1 Oct 2019, is for Airmen studying for promotion to Staff Sergeant. It is based on Air Force Handbook 1, Airman, 2019-2021 edition, and is 270 pages. It includes chapters 2-4, 6-9, and 11-25. All interior pages are black and white. Produced by FreePDG.com.