This is a procurement for 7 units of a flight-critical part that requires delivery FOB Origin. The Government will only solicit sources already approved for this item, as obtaining new source approval is a lengthy process that cannot delay an award. Unapproved sources must submit a detailed source approval request with their proposal, following specific NAVSUP WSS brochures. The Government is not using commercial item acquisition procedures for this requirement, but parties may still identify their capability to provide a commercial alternative within 15 days of the notice's posting.