this is another modded mars mission set (the small rover thing) that is transferable to the original.
I built this while my dad and my brother were playing lego batman and I had nothing to do. So I saw the little rover sitting near my pelican and thought "that canopy sure looks cool"and decided that I would make a plane. So after 30 minutes I looked at it and said "needs a rotor" and thus it became a chopper!
My explanation to the the 4 Gatling guns is: I couldn't find any missile pieces so I just added more machine guns