What happens is like this; once the threat of closure becomes real to the locals then suddenly the impass that was preventing local construction disappears. The local contractors make concessions that they wouldn't have earlier in order to try to ensure the base stays open.
Contractors probably put their individual politics aside, however temporary. Some of them are in there building runways and towers, etc. but don't expect them to come to the airshows for anything but the possibility of a crash and burn if at all.