Source: US Marines (video statements)
Marine Rotational Force – Southeast Asia (MRF-SEA) is a Marine Corps Forces Pacific construct involving planned exchanges with subject matter experts, promoting shared security goals with Allies and partners, and positions the Marines of I Marine Expeditionary Force west of the international date line.
Much like the Unit Deployment Program or Marine Expeditionary Unit deployments that leverage purpose-built units, MRF-SEA maintains a forward presence and enhances Marine Corps crisis and contingency response capabilities.
Marine Sgt. Christian Tofteroo