 The fighters were moved in October to Hatzor Airbase from the Herzliya strip in due to its unsuitability in rainy conditions, probable loss of clandestine status, moving front lines which made former British bases safe for use, and a shift in the balance of air superiority towards the Israelis.As the war progressed, more and more aircraft were procured, including Boeing B-17s, Bristol Beaufighters, de Havilland Mosquitoes and P-51D Mustangs, leading to a shift in the balance of power.Although the IAF had never secured complete aerial supremacy, by the end of the war it had proven decisive in the air.