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III MARINE EXPEDITIONARY FORCE
Okinawa, Japan

Aug 12, 2025

U.S. Marine Corps Sgt. Mason Workman, an aerial observer with Marine Medium Tiltrotor Squadron (VMM) 265 (Rein.), 31st Marine Expeditionary Unit, sets parameters for the directional command activated sonobuoy system buoy during anti-submarine warfare training, in the Philippine Sea, Aug. 8, 2025.

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This photograph is considered public domain and has been cleared for release. If you would like to republish please give the photographer appropriate credit. Further, any commercial or non-commercial use of this photograph or any other DoD image must be made in compliance with guidance found at https://www.dimoc.mil/resources/limitations, which pertains to intellectual property restrictions (e.g., copyright and trademark, including the use of official emblems, insignia, names and slogans), warnings regarding use of images of identifiable personnel, appearance of endorsement, and related matters.

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III Marine Expeditionary Force