Modern Day Marine (MDM)

Modern Day Marine 2021

Washington, D.C., U.S.A. — Walter E. Washington Convention Center

April 28, 2026 - April 30, 2026

Modern Day Marine is the premier military equipment, systems, services and technology exposition. View the latest Marine-relevant products and solutions, as well as attend service level presentations on future operating concepts, requirements, experimentation and acquisitions objectives, and implications of the emerging operational environment.

Featured Capabilities

VAMPIRE live fire demonstration

VAMPIRE™

DiSCO™ concept image thumbnail

Distributed Spectrum Collaboration and Operations (DiSCO™)

M3 Capabilities: Aircraft Modernization, Missionization and Maintenance, Repair and Overhaul

M3 Capabilities

Next Generation Jammer – Low Band (NGJ-LB) on the EA-18G Growler

Next Generation Jammer – Low Band (NGJ-LB)

L3Harris resilient comms solutions

Resilient Communications and Networks

Electronic Warfare Solutions

Electronic Warfare

L3Harris' Iver underwater autonomous vehicle

Iver Suite of Autonomous Underwater Vehicles

News

L3Harris’ perimeter truss reflector successfully deploys aboard ViaSat-3 Flight 3 on April 29, 2026. Credit: Viasat

Editorial | 08. 03. 2026

L3Harris Achieves Historic First Flight Success with Perimeter Truss Reflector Technology

L3Harris Technologies successfully deployed its perimeter truss reflector onboard the ViaSat-3 Flight 3 satellite, marking the first flight for the L3Harris’ perimeter truss reflector design.

L3Harris’ perimeter truss reflector successfully deploys aboard ViaSat-3 Flight 3 on April 29, 2026. Credit: Viasat

Editorial | 08. 03. 2026

L3Harris Achieves Historic First Flight Success with Perimeter Truss Reflector Technology

Optical Engineer Bente Eegholm performs and inspection of Roman's Primary mirror. This was taken shortly after it was lifted out of the shipping container. Credit: NASA/Chris Gunn.

Editorial | 08. 03. 2026

Roman Space Telescope Will Survey a Century of Cosmos in Weeks: L3Harris Technology Makes It Possible

Submarine slices through water surface under a blue sky

Press release | 07. 23. 2026

L3Harris to Deliver Critical Monitoring Systems for US Navy Submarine Programs

L3Harris delivered three MC-55A aircraft to the U.S. Air Force thumbnail image

Editorial | 07. 16. 2026

Missionized Business Jets: The Future of Airborne ISR Is Already Here

Soldiers assigned to the Military District of Washington board a UH-60 Black Hawk helicopter.

Editorial | 07. 16. 2026

Networked for the Fight: Army Aviation’s Next Advantage

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The appearance of U.S. Department of War visual information does not imply or constitute DOW endorsement.