Second Lieutenant is the lowest commissioned rank in the United States Air Force below
First Lieutenant. Second Lieutenants may supervise flights of varying sizes, depending upon the career field, as a flight commander or assistant flight commander or may work in a variety of administrative positions at the squadron, group, or wing level.
As a result of the gold color of the bars, second lieutenants are often referred to colloquially as "Butterbars", "Nuggets," "Commissioned Private" or "2nd Luey."
