The Department of Defense, through the Naval Undersea Warfare Center, is seeking information from industry regarding capabilities to provide Foreign Military Sales Follow-on Technical Support for SEA21 PMS 326 International Fleet Support. This procurement aims to offer eligible foreign customers a comprehensive range of U.S. Security Cooperation solutions, including sustainment material, systems upgrades, technical support, and maintenance services for naval vessels and related infrastructure across various countries. Interested parties are encouraged to submit their expressions of interest, detailing their capabilities and responses to specific questions by 12 PM PDT on January 25, 2026, to the designated contacts, Jason Gavinski and Karen Smith, via the provided email addresses.