Welcome to the U.S. Navy's website for the Mariana Islands Training and Testing (MITT) Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement (EIS/OEIS).

On Aug. 7, 2020, the Navy released its Record of Decision to continue training and testing activities within the MITT EIS/OEIS Study Area (hereafter referred to as the “Study Area”). The Navy selected Alternative 2, its Preferred Alternative, after considering its strategic and operational needs, potential environmental impacts, and comments from elected officials, government agencies, organizations, and the public.

The Navy prepared the supplement to the 2015 MITT Final EIS/OEIS to assess the potential environmental impacts associated with ongoing at-sea and Farallon de Medinilla (FDM) training and testing activities conducted within the Study Area. Training and testing activities are generally consistent with previously analyzed activities and are similar to those that have occurred in the Study Area for decades.

The Final Supplemental EIS/OEIS supports the request for federal regulatory permits and authorizations under the Marine Mammal Protection Act and the Endangered Species Act. The Final Supplemental EIS/OEIS includes an analysis of training and testing activities using new, relevant information available after the release of the 2015 MITT Final EIS/OEIS. New information includes more recent marine mammal density data and new scientific information. 

Watch an informational video about the importance of Navy training and testing in the Study Area.