The AT-9 advanced trainer was used to bridge the gap between single-engine trainers and twin-engine and four-engine aircraft.

On April 29, 1942, Andrews won his pilot's wings and commission as an Army 2nd Lieutenant at Moody Field, Valdosta, Georgia. Because the rapidly expanding Air Force urgently needed pilots, his entire graduating class was sent to Columbus Air Base in Mississippi to become flight instructors in twin-engine advanced flying.


Lockheed A-28 "Hudson"

At. Columbus, the Lockheed Hudson, or A-28, was also used for advanced training. This was the first American aircraft to be used operationally by the Royal Air Force during World War II.  It served both the RAF and the U.S. Navy as a maritime patrol plane.