Complex sentence: The organization was placed in a provisional status in January 1945, being re-designated as the Seattle Provisional Control Group, it controlled little or no assets, being under the Fourth Air Force 321st Wing (Special).
Split into simpler sentences: The organization was placed in a provisional status in January 1945, being re-designated as the Seattle Provisional Control Group. It controlled little or no assets, being under the Fourth Air Force 321st Wing (Special).