The Department of Defense, through the NAVSUP Weapon Systems Support, is seeking to procure two heat exchangers for repair and modification, specifically identified by NSN 7R-1660-014545010-QE. This procurement is a sole source requirement directed to Drake Air, Inc., the Original Equipment Manufacturer, as the government anticipates receiving a single acceptable offer due to the lack of available drawings or data for alternative sources. The heat exchangers are critical components used in aircraft air conditioning, heating, and pressurizing systems, and the government intends to solicit and negotiate with only one responsible source under the authority of 10 U.S.C. 2304(c)(1). Interested parties must submit their capability statements to the primary contact, Michael J. Keith, via email at michael.j.keith40.civ@us.navy.mil within 15 days of this notice, with proposals considered if received within 45 days.