On the fourth part where you have to blow up septic tanks press X till your looking over your jet you'll see an x on the ground when its over the enemy and press A and anything in or around its will blow up!
Usually use the jink to avoid missiles or get fighters off your tail. Don't use the roll it will only get you points. And to out maneuver every jet is to keep on the thrust and afterburner and do a tight turn while doing so
To get the gold medal on this level you need to shoot down the bombers with the machine guns and as many of the MIG-27 fighters as possible. The bombers can only hit you if you fly within about 180 degrees from the rear, so fly at them from the front to avoid getting hit by their aa-guns. Your guns can hit a target a little ways before you can lock on a target. If you are not heading at the target remember to lead the target accordingly to their speed.
To earn more points in a mission try to shoot everything with your machine gun. you'll get more points with your gun than with your rockets (in most of the missions), which is important for a golden medal.
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