This is a sources sought notice for market research to identify manufacturers capable of producing a specific power supply for the PATRIOT Missile System. The item is currently restricted as a sole source to HDL Research Lab Inc., but companies may submit documentation to demonstrate their ability to manufacture it and fulfill the test procedures. The anticipated contract is a One-Time-Buy for an estimated quantity of 5 units. The place of performance is the contractor's own facility. Interested parties must submit a one-page capabilities statement addressing specific requirements via email to the designated contracting specialist.