Department of the Navy

The Department of the Navy (DoN), after carefully weighing the strategic, operational, and environmental consequences of the proposed action, announces its decision to implement Alternative 1, the Navy's preferred alternative, as described in the Mariana Islands Training and Testing (MITT) Final Environmental Impact Statement/Overseas Environmental Impact Statement (EIS/OEIS). Under Alternative 1, the Navy will be able to meet current and future DoN and DoD training and testing requirements, including the use of active sonar and explosives within the MITT Study Area. The MITT study area is composed of established sea-based (at-sea) ranges and land-based training areas on Guam and the Commonwealth of the Mariana Islands, and operating areas and special use airspace in the regions of the Mariana Islands that are part of the Mariana Islands Range Complex (MIRC). The Study Area also includes a transit corridor that connects the MIRC and the Hawaiian Islands Range Complex and pierside sonar maintenance and testing alongside Navy piers located in Inner Apra Harbor.