Norden bombsight
In August 1943 the AAF Central Bombardier Instructor School was transferred from Carlsbad Army Airfield, New Mexico, to Midland. The base pioneered the use of the highly secret Norden bombsight and at one time operated twenty-three bombing ranges across West Texas. Personnel from Midland AAF were instrumental in developing photographic and sonic methods of scoring bomb hits and analyzing bombing proficiency.