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Notice of Intent To Prepare a Supplemental Environmental Impact Statement for the Sentinel Deployment and Minuteman III Decommissioning and Disposal The Department of the Air Force (DAF) is issuing this notice to prepare a Supplemental Environmental Impact Statement (SEIS) to the Environmental Impact Statement for Sentinel (Ground Based Strategic Deterrent (GBSD) Program Deployment and Minuteman III Decommissioning and Disposal (2023 EIS) and the May 2023 Record of Decision (ROD) which documented DAF's decision regarding sequential replacement of all land- based Minuteman III (MMIII) intercontinental ballistic missiles (ICBM) in the United States with a technologically advanced Sentinel ICBM system on base at Francis Emroy Warren Air Force Base (AFB) (FE Warren) in Wyoming, Malmstrom AFB (Malmstrom) in Montana, and Minot AFB (Minot) in North Dakota and in the missile fields across five states. The SEIS will analyze potential environmental impacts associated with changes to the Proposed Action analyzed in the 2023 EIS. The "Sentinel Weapon System Program" ("Sentinel Program" from this point forward) addressed in the 2023 EIS and the May 2023 ROD was formerly known as the "GBSD." This SEIS is being prepared in accordance with the National Environmental Policy Act of 1969 (NEPA) (42 United States Code 4321 et seq.), as amended by the Fiscal Responsibility Act of 2023, the 2026 Department of War and the 2026 DAF NEPA Implementing Procedures. DAF is the lead agency for the Proposed Action. The Bureau of Indian Affairs, Bureau of Land Management, Bureau of Reclamation, U.S. Army Corps of Engineers, U.S. Forest Service, U.S. Fish and Wildlife Service, and U.S. Department of Agriculture Farm Service Agency will be invited to participate as Cooperating Agencies. DAF will consult with, and obtain the comments of, federally recognized Native American Tribes and federal agencies that have jurisdiction by law or special expertise related to the environmental analysis. Agency: Defense Department; Air Force Department. Source: Federal Register Published: 2026-10-09 Original: https://www.federalregister.gov/documents/2026/10/09/2026-20724/notice-of-intent-to-prepare-a-supplemental-environmental-impact-statement-for-the-sentinel This listing was added to the Notice Nearby public register from a public government source. It is not a Notice Nearby paid publication, affidavit, or placement certificate.