From speaking to a NJA Captain on the west coast, he said that for every two command positions available at NJI, one of those must be made available to NJA. Further, for every 3 command positions available at NJA, one must be made available to NJI first officers. Interesting, I guess it does confirm that even if you join NJA, you will be given a chance to fly the GV and GIV when seniority is high enough.