U.S. Marines execute a notional fire mission with the Navy-Marine Expeditionary Ship Interdiction System during an Expeditionary Advanced Base Field Training Exercise at the Central Training Area, Camp Hansen, Okinawa, Japan, July 28, 2025. The NMESIS system is a ground-based offensive anti-ship missile system, used in sea denial and littoral protection to offer a highly mobile and rapidly deployable island defense solution. This NMESIS system is a 3d Marine Division asset. (U.S. Marine Corps photo by Cpl. Lucas Lu) - U.S. Marines execute a notional fire mission with the Navy-Marine Expeditionary Ship Interdiction System during an Expeditionary Advanced Base Field Training Exercise at the Central Training Area, Camp Hansen, Okinawa, Japan, July 28, 2025. The NMESIS system is a ground-based offensive anti-ship missile system, used in sea denial and littoral protection to offer a highly mobile and rapidly deployable island defense solution. This NMESIS system is a 3d Marine Division asset. (U.S. Marine Corps photo by Cpl. Lucas Lu)