The Department of Defense, through the Department of the Navy's NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of electronic countermeasure receivers, specifically NSN 7R-5865-017059130-P8, with a quantity of four units required. This procurement is critical as the items are flight critical, necessitating government source approval prior to contract award, and only previously approved sources will be considered for this solicitation. Interested vendors must provide comprehensive documentation as outlined in the NAVSUP Source Approval Information Brochures, and failure to submit the required data will result in disqualification from the award process. For further inquiries, interested parties can contact Sarah E. Crompton at (215) 697-5809 or via email at SARAH.CROMPTON@NAVY.MIL.