The Navy has a few 'Expeditionary' squadrons of Prowlers that support the USAF. They do not deploy to the boat but instead deploy to land bases, generally with the USAF but sometimes with the Marines. Before OIF the two deployment sites were Incirlick, Turkey and Prince Sultan Air Base (PSAB), Saudi Arabia. Nowadays they are a little closer to the action. When I was in one there were four USAF aircrew in the squadron, one pilot and three Navigators. The pilots were a mix of tactical types, usually F-15E and F-16 but with a few A-10 guys too. The Navs were generally tactical too, mainly F-15E and B-1 guys, but a few were from the RC-135 and EC-130. They were usually good guys and gals and gave the squadrons a pretty broad base of experience when it came to USAF ops. When I was leaving the USAF had stopped sending Pilots and had started sending WSO's straight out of VT-86.
There used to be four squadrons but now there are only three, one of them was retired after OIF because they figured they didn't have as much of a need for them anymore. Whoops. There was supposed to be a fifth squadron but it never got off the ground, the Navy figured out there weren't enough Prowlers to go around. The reserve squadron, VAQ-209, has been treated as a part-time expeditionary squadron, deploying quite often for about 2 months at a time to fill gaps. Boat squadrons often supplement the expeditionary squadrons in their deployed locations now too with dets.
The four Marine Prowler squadrons were not officially considered expeditionary but they were treated as such when it came to deployments. There is supposed to be a VMAQ squadron in Iwakuni but that was often filled by a VAQ squadron while the Marines played in the sandbox. Occasionally even a boat squadron would go there.
If they want to continue the expeditionary squadrons after Prowlers leave the service someone will have to cough up the money to buy more Growlers. Just an offer for Navy guys to ride in anything they have is a bit pathetic.
Those were PEP guys and not part of the whole expeditionary arrangement. My last CO in Prowlers did a PEP tour with EF-111's and flew in the Gulf War.