Easy completion of Mission 5 hints
-After destroying the three ships, go up as high as you can and dive while shooting unguided missiles at the planes.
-When first starting, you will launch off an aircraft carrier and the message "We've spotted three enemy ships coming this way! Defend the carrier" will appear. Destroy the three enemy ships to be asked to take out the radar guns before going after the base. There are five radar guns. When destroying the planes at the base, go as high as you can above the base then dive toward it at medium speed and, when you get close enough, shoot unguided missiles to destroy the planes.