U.S. Marine Corps Lt. Col. Jonathan Wagner, right, the operations officer for Marine Rotational Force-Southeast Asia, I Marine Expeditionary Force, applies a brassard symbolizing the company commander on an Indonesian Marine with 4th Marine Infantry Brigade, Pasmar 1, during the Keris Marine Exercise opening ceremony at Piabung Training Area in Sukabumi, West Java, Indonesia, Nov. 23, 2023. Keris MAREX is a bilateral exercise conducted by the U.S. Marine Corps and Indonesian National Armed Forces led by the Indonesian Korps Marinir to strengthen relationships and build alliances and collective capacity among participating forces in the advancement of a Free and Open Indo-Pacific. MRF-SEA is a Marine Corps Forces Pacific operational model that involves exchanges with subject matter experts, promotes security goals with Allies and Partners, and positions I MEF forces west of the International Date Line. (U.S. Marine Corps photo by Sgt. Shaina Jupiter)