 The 5,000 foot runway was used for training bomber pilots like the North American B-25 Mitchell and Lockheed P-38 Lightning.The Vultee BT-13 Valiant and Boeing-Stearman Model 75 were the most common plane used for training at Minter Army Airfield auxiliary fields.,Lost Hills Auxiliary Field was closed on January 11, 1945 and became the Lost Hills Airport a public airport.