SOUTH CHINA SEA (Dec. 11, 2020) A U.S. Marine Corps AH-1Z Viper helicopter assigned to Marine Medium Tiltrotor Squadron (VMM) 164 (Reinforced), 15th Marine Expeditionary Unit, banks while turning in flight during Cooperation Afloat Readiness and Training (CARAT) Singapore. This year marks the 26th iteration of CARAT, a multinational exercise designed to enhance U.S. and partner navies' abilities to operate together in response to traditional and non-traditional maritime security challenges in the Indo-Pacific region. (U.S. Marine Corps photo by Lance Cpl. Brendan Mullin)