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Published: 2023

Total Pages: 0

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This Environmental Impact Statement (EIS) has been prepared to evaluate the potential environmental consequences associated with the Proposed Action of optimizing airspace available to Mountain Home Air Force Base(AFB), Idaho, for air crew training to achieve and maintain proficiency at low altitudes, in mountainous terrain with consistent low-altitude floors. Additionally, the Proposed Action evaluates lowering altitude floors across multiple Military Operations Areas (MOAs)for supersonic training. The current Special Use Air space is inadequately configured to conduct modern real-world training. The technology available to our adversaries has advanced rapidly over the past 25 years. The Proposed Action defines altitude adjustments of the existing Special Use Air space to allow for subsonic low-altitude aircraft training operations, with alternatives that range from 100 feet above ground level(AGL)to 500feet AGL, and supersonic flight as low as 5,000 feet or 10,000 feet AGL. The use of chaff and flares throughout the airspace will continue. The proposed airspace modifications would permit aircrew to build proficiency in low-altitude tactics and terrain masking, for survival in a highly contested environment. This EIS was prepared by the Air Force in cooperation with the Federal Aviation Administration. The document has been prepared in accordance with the National Environmental Policy Act, the Council on Environmental Quality Regulations for Implementing the Procedural Provisions of the National Environmental Policy Act, the Air Force Environmental Impact Analysis Process located at Title 32of the Code of Federal Regulations Part 989, and Federal Aviation Administration Order 1050.1F, Environmental Impacts: Policies and Procedures. NOTE: Responses to public and agency comments on the Draft EIS can be found in Appendix B(Public Review and Comment), SectionB.2.6.1, beginning on page B-35.