As far as billets in Okinawa for Navy intel - they are extremely limited since the P-3 squadrons out there are det'd out. They way the billeting will work is that you will be assigned to the parent squadron and maybe be sent out to the detachment, but it is unlikely. The closest you will come to Okinawa is working with III MEF in Sasebo/Iwakuni or with Kitty Hawk, CVW-5, 7th Fleet, CSG-5 out of Atsugi/Yokosuka and maybe, just maybe MSS-7 out of Guam. If you only were USMC or USAF...