Complex sentence: Lisa Stephens Disbrow (born September 29,1962) has served as the Under Secretary of the Air Force since February 24,2016 and Assistant Secretary of the Air Force for Financial Management and Comptroller from 2015 to 2016.
Split into simpler sentences: Lisa Stephens Disbrow (born September 29,1962) is the Under Secretary of the Air Force. Previously, she served as Assistant Secretary of the Air Force for Financial Management and Comptroller from 2015 to 2016.