NMFS is notifying registered vessels of their platoon assignments for the B season Atka mackerel fishery in harvest limit areas (HLA) 542 and/or 543 of the Aleutian Islands subarea of the Bering Sea and Aleutian Islands management area (BSAI). This action is necessary to allow the harvest of the B season HLA limits established for area 542 and area 543 pursuant to the 2002 Atka mackerel total allowable catch and associated Steller sea lion protection measures.