WASHINGTON, June 9 (TNSFR) -- The U.S. Navy has announced its intention to prepare a Supplemental Environmental Impact Statement/Overseas Environmental Impact Statement for Mariana Islands Training and Testing activities. This supplement will analyze ongoing and future military readiness activities, including training, research, development, testing, and evaluation, as well as range modernization and sustainment within the MITT Study Area, with these activities slated to begin in July 2027.