The Department of Defense, through the NAVSUP Weapon Systems Support office, is soliciting proposals for the sole-source repair of an Inertial Navigation unit, identified by NSN 7RH 6605 014830602 CB and Part Number 233A935-1, designated as a Critical Application Item for Foreign Military Sales Case GR-P-BBK. The contractor will be responsible for evaluating, laboring, and providing materials and parts necessary to restore the unit to operational condition, adhering to strict packaging, marking, and quality assurance standards, including ISO 9001 compliance. This procurement is critical for maintaining navigational capabilities and is subject to Free Trade Agreements and the World Trade Organization Government Procurement Agreement. Interested parties must ensure they meet government source approval requirements and submit inquiries to Dana Scott at dana.l.scott14.civ@us.navy.mil, with a performance period set from January 5, 2026, to April 6, 2026.