NAVSUP Weapon Systems Support Philadelphia intends to award a sole-source contract to GROUP FOUR TRANSDUCERS INC for the repair of one calibration kit. The justification is that the government does not own the rights to the necessary technical data and reverse engineering is uneconomical. The anticipated award date is March 2026. Interested parties have 15 days from the notice date to express their interest and capability to provide a commercial item alternative. Capabilities and qualifications must be submitted via a specified email address.