how long does it take to become a lieutenant colonel in the air force
Lieutenant colonel (United States) Promotion to lieutenant colonel is governed by Department of Defense policies derived from the Defense Officer Personnel Management Act (DOPMA) of 1980 for officers in the Active Component and its companion Reserve Officer Personnel Management Act (ROPMA) for officers in the Reserve Component (e.g., Reserve and National Guard). DOPMA guidelines suggest 70% of majors should be promoted to lieutenant colonel after serving a minimum of three years at their present rank and after attaining 15â€“17 years of cumulative commissioned service.
Junior officer In the United States Armed Forces, the term junior officer is used by the Navy and the Coast Guard for officers in the ranks of ensign (O-1), lieutenant, junior grade (O-2), lieutenant (O-3), and lieutenant commander (O-4).