The Department of Defense, through the Naval Surface Warfare Center Dahlgren Division (NSWCDD), is seeking proposals for the maintenance and licensing of US3D software, specifically from VirtusAero LLC, which is the exclusive provider of this software. The procurement includes a single node-locked license for the US3D Workstation Version, an annual license for the US3D Cluster Version (single named-user), and a 2-seat floating license for the US3D Cluster Version, all under firm-fixed-price arrangements. This software is critical for ongoing operations, as it is currently installed and in use, and any alternative software would result in significant delays and costs. Interested vendors must submit their proposals by August 10, 2025, with an anticipated award date of August 24, 2025. For further inquiries, contact James Embrey at james.d.embrey3.civ@us.navy.mil or by phone at 540-498-5241.