The Guam and CNMI Military Relocation proposal was put forward by the Joint Guam Program Office and the U.S. Department of the Navy with the Final EIS in July 2010.

The Mariana Islands Range Complex (“MIRC”), as proposed within the NEPA framework, was an enhancement on the long-standing underwater range complex in the waters surrounding the Mariana Islands that was developed pursuant to the 1999 EIS for “Military Training in the Marinas.”

On September 09, 2011, the U.S. Navy announced its intent to issue a Mariana Islands Training and Testing Environmental Impact Statement, and on September 13, 2013, the Draft of the EIS was published. The MITT proposal sought to increase the types and tempo of training activities within the MIRC. The Final EIS for MITT, was produced on May 22, 2015, with the signing of the Record of Decision on July 23, 2015.

The United States Navy issued its Draft Environmental Impact Statement for the CNMI Joint Military Training (“CJMT”) program on April 03, 2015. CJMT proposed to largely supersede the prior programs in the CNMI, such as the MITT and the Guam-CNMI Relocation Programs, with an expansion of live-fire training activities and infrastructure to support the relocation of the U.S. Marines from Okinawa to Guam.

Shortly after the signing of the lease agreement for the Tinian divert airfield, the USAF released its Draft Supplemental Environmental Impact Statement (“DSEIS”) for Tinian Divert Infrastructure Improvements in May 2019. The DSEIS, stated that after the ROD was signed based on the 2016 Divert EIS, further evaluation of fuel transfer methods was undertaken that were not included in the 2016 FEIS. In the supplement to the 2016 FEIS, USAF proposed to construct a fuel pipeline, and associated infrastructure at the Tinian Harbor to transport fuel from the seaport to the airport. This pipeline would eliminate the need for bulk fuel storage tanks at the Tinian seaport and negate the need for fuel tanker trucks to shuttle fuel from the seaport to the airport.