On level 8 after you take-off you will go toward a cliff. instead of
going over the cliff go down and turn left. follow the coast line until
you come to a dock-like thing with two hangers on it. then go as low as
you can with out crashing and fly over the hangers. keep low to the
until you come to a railroad track then pull up and destroy the air
field so that you will not be fired at from enemy planes. now you have
gotten in undetected.