The Navy requires overhaul, repair, upgrade, testing, and inspection of Receiver, Countermeasures, NSN 5865-01-663-1881, P/N 2687100G002, in accordance with the latest technical publications and a detailed statement of work. Award is limited to Government-approved sources; non-approved offerors must submit the NAVSUP WSS source-approval brochure information with their proposal or risk not being considered, and the Government may proceed with award based on fleet support needs if source approval cannot be completed in time. Pricing is expected to be firm-fixed-price, with the PCO to be notified if FFP cannot be determined; the contractor must supply parts and materials unless designated Government-furnished and maintain ISO 9001/SAE AS9100 quality and calibration controls. The item carries a 12-month warranty, with defects to be reported within 60 days of discovery. Performance is identified at L3 Harris Technologies, 77 River Road, Clifton, NJ 07014, and repairs/upgrades must be performed at the facility specified in the statement of work.