U.S. Marines attached to Marine Rotational Force-Southeast Asia, I Marine Expeditionary Force, alongside Singapore Guardsmen with 7th Singapore Infantry Brigade, stand-by for the opening ceremony for Valiant Mark 25 on Bedok Camp, Singapore, March 17, 2025. 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)