This is a sole-source opportunity for a Tsunami software and hardware upgrade from Textron Systems Corporation, required to ensure compatibility with existing systems. The work will be performed at Dahlgren, Virginia, with delivery to the Naval Surface Warfare Center Dahlgren Division. The anticipated timeline includes a solicitation publication on 1 May 2026 and an award by June 2026. No specific budget amount is provided, but all costs including shipping must be included in the quoted price. Offerors must be authorized resellers with documentation from the original equipment manufacturer.