The personnel and the assets of the RBS Division became the 1st Electronic Combat Range Group on 1 July 1989 when the 1CEVG was split, and other 1CEVG organizations transferred to SAC headquarters.
On July 1, 1989, the RBS Division's personnel and assets were merged with those of the 1st Electronic Combat Range Group, which was established following the separation of the 1CEVG and the relocation of its other units to SAC's central facility.