The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure an Antenna Assembly under a presolicitation notice. The requirement includes three units of NSN 7R-5985-016740470-RQ, with delivery terms set to FOB Origin, and emphasizes that the item is flight critical, necessitating Government source approval prior to contract award. This procurement is crucial as the technical data required for competitive solicitation is not available, and only previously approved sources will be considered for this contract. Interested parties must submit their proposals along with necessary source approval documentation to Carmelena C. Oldroyd at NAVSUP WSS, with a deadline for submissions set at 45 days from the notice publication date. Failure to provide the required documentation will result in disqualification from the award process.