Actually, I'd put J-Town as iffy too--or, more properly, the vast majority of traffic on the Ft. Knox system seems to be encrypted. (FWIW, I live very close to the west side of J-Town and do have a PSR-500. You can pick up the control channel fairly well here--there's just not a heck of a lot of traffic "in the clear", or the voice channels themselves may be just weak enough to not be able to decode well even with an optimal ground-plane setup. Maybe if I had a yagi cut for the system...
)
I would also think Okolona et al would be able to pick it up well--goodness knows they can hear the artillery range well enough!