The Department of Defense, specifically the Army's Soldier Effectiveness Directorate, is seeking maintenance support for the 3dMD 10Hz 3dMDhead9.t capture system, which is critical for various research projects related to soldier mobility and lethality technologies. The maintenance contract is necessary to ensure the proper functioning, care, and software updates of this equipment, which is vital for ongoing data collection and high-profile experiments. 3dMD LLC is identified as the sole source for this support, and the current maintenance agreement is set to expire in September 2025, necessitating a follow-on contract. Interested parties must direct inquiries to Contract Specialist M'Rika Caldwell at mrika.r.caldwell.civ@army.mil by September 18, 2025, at 5 PM EST, as this notice is not a request for quotes and competition is at the discretion of the Contracting Officer.