 Complete the following phrase:  Faced with equipment shortages, a hostile desert environment, and superior enemy planes, Coninghams management system, through judicious deployment of his squadrons, gradually achieved air superiority in the North African campaign. In particular, Coningham developed the use of fighter-bombers, able to fight as fighter planes in the air or in bombing and strafing attacks of enemy ground targets. Coningham developed an efficient ground support system to keep planes flying, and a command and control system to allow ground observers to radio in air attacks. Coninghams Western Desert Air Force, in continuous air attacks of enemy ground targets, was instrumental in stopping the 