evansb has it - Cam Ranh Bay.
The air forces were:
USAF
SVNAF
NVNAF
Russian Air Force
It is now mainly the civilian airport for Nha Trang, instead of the old airport in Nha Trang, which was so convenient, you could take a cyclo (pedicab) from the airport to your hotel. Nowadays it takes 45 minutes by bus.
Over to you Bri. I didn't expect to hear from you at this hour!