Singapore CH-47SD/F Chinook heavy-lift helicopters prepare to land at Military Training Area (West), Singapore, on March 25, 2025, in preparation for the Valiant Mark 25 field training exercise taking place at SAFTI City training facility. SAFTI City, the premier urban training facility in Southeast Asia, is one of the largest and most technologically advanced facilities of its kind in the world. U.S. Marines with Marine Rotational Force-Southeast Asia were the first foreign partner force to train at the facility during Valiant Mark 25. Valiant Mark is an annual, bilateral training exercise designed to enhance interoperability, build mutual defense capabilities, and strengthen military-to-military relationships between the U.S. Marine Corps and Singapore Armed Forces. MRF-SEA is a rotational unit derived from elements of I MEF executing a U.S. Marine Corps Forces, Pacific operational model that involves training events and exchanges with partner military subject matter experts, promotes security goals with allied and partner nations, and ensures a persistent I MEF stand-in presence west of the international date line. (U.S. Marine Corps photo by Sgt. Shaina Jupiter)