First, I'm sorry if this has been covered before.

 A.i. traffic slows my system waaaaaayy down, does anyone know an EASY way to add static aircraft to scenery......in a freeware sort-a way? RWY12 is great and easy to use, (so simple even I can do it)  but I'm looking to add some low-poly military aircraft to my scenery. Since there are no military aircraft for use with RWY12, can anyone recommend a similar program that has these kind of files and is as easy to use? Any help would be great.