The Naval Information Warfare Center Pacific is conducting market research for software development, maintenance, and engineering support for the proprietary Adjunct Processor Multi-Link Interface Unit software, a critical component of the Command and Control Processor systems. The required support includes software maintenance, updates, vulnerability management, and subject matter expertise. The original developer and sole proprietor of the required technical data is Ultra Electronics, so any interested party must demonstrate verifiable legal access to this proprietary source code and documentation. Capability statements are due by April 10, 2026. This is a sources sought notice for planning purposes only and is not a solicitation for proposals.