The item requires engineering source approval by the design control activity, and approved source(s) retain unique design capability, engineering skills, manufacturing/repair knowledge, and data rights not economically available to the Government. An alternate source must qualify under procedures approved by the cognizant Government engineering activity. The Government is not using FAR Part 12 commercial-item policies, but interested parties may identify their interest and capability to satisfy the requirement with a commercial item. Quantity is 40 units, with delivery FOB origin.