Joining Air Force, best base for bjj?

Joining the Air Force, I just wanted to ask which ones had the best gyms at a walking distance (like under 1 hour round trip is fine). I know most of the ones in Texas are good and the one in bedford has several. Just wanted to know, tryna make a list so I know what to pick later on for my dream sheet. Overseas would have to be Germany or Japan. Nothing in California though, tryna get out of here. Thanks