Here's an idea, not entirely original, but a good idea. There is a weapon the U.S. aviation arsenal called an AC-130. Its basically a C-130 cargo plane that was originally designed to haul troops and small vehicles. This type of fixed wing weapons platform was first utilized by the U.S. in the Viet Nam Conflict. The modern day version of this is called the AC-130 Spectre. It sports a 105mm howitzer, 40mm cannon and several 20mm Vulcan heavy machine guns. All of it is equiped with thermal imaging that allows it to circle high over head for long periods of time and provide close air support day or night.
I will also attempt to add a link of this piece of equipment in action. Be warned ahead of time, that this link shows actually video of operations in Afghanistan against terrorist cells. At first I had reservations about putting the link here. But the supporting cast of this video would love to put an end to you and your option to play Planetside and everything else you may do.
Enjoy..
http://litterbox.zawodny.com/~jzawod...GunshipMed.wmv