Use the following tricks when you have a group of enemies on you, or just one that will not give up. Find a very mountainous area and try to lose your enemy in there at full speed. Zigzag in and out until the enemy cannot find you. They will not follow you into this mountain area. If dealing with multiple enemies, disengage, climb to 40,000 feet at full throttle, take a breather, then re-engage and destroy the enemy. Use this technique against the Yellow Squadron in the second part of the Siege Of Farbanti mission.