The Department of Defense, through the Defense Logistics Agency (DLA) Aviation at Huntsville, AL, is seeking to procure an upgrade for the Air Defense Interrogator (ADI) TPX-57A(V)1 hardware, specifically under the solicitation number SPRRA2-25-R-0055. This procurement aims to enhance the capabilities of the ADI, which supports the PATRIOT’s Identification Friend or Foe (IFF) system, integral to the Program Executive Office Missiles and Space (PEO MS) Integrated Fires Mission Command (IFMC). The acquisition is restricted to Raytheon Collins Aerospace due to the specialized nature of the hardware, and interested parties must be Joint Certification Program (JCP) certified to receive the Statement of Work (SOW). Interested vendors should direct their inquiries to Lauren Tatum at lauren.tatum@dla.mil or Anna Phillips at anna.phillips@dla.mil, with a response deadline set for 15 days from the presolicitation notice.