This ROD and Approved Resource Management Plan Amendments (ARMPAs) are for the Rocky Mountain Region Greater Sage-Grouse Sub-Regions of Lewistown, North Dakota, Northwest Colorado, and Wyoming; and Approved Resource Management Plans (ARMPs) for the Billings Field Office, Buffalo Field Office, Cody Field Office, HiLine District, Miles City Field Office, Pompeys Pillar National Monument, South Dakota Field Office, and Worland Field Office. The ARMPAs and ARMPs include GRSG habitat management direction that avoids and minimizes additional disturbance in GRSG habitat management areas. Moreover, they target restoration of and improvements to the most important areas of habitat.--Page S-1.