I currently work on an air force base and I can think of at least 15 great cache locations right off the top of my head. I lived on the base for 6 years while my dad was active duty, and I know a lot of neat places I could hide a cache. But, I do understand that you can't hide a cache without permission from the land owner... right? I don't think I'm ready to approach the US Government to ask if I can hide boxes of stuff on their property. The paper work required would be mind boggling I'm sure!