The Department of Defense, through the Defense Logistics Agency (DLA) Aviation, is preparing to issue a presolicitation for a Letter Request for Proposal (RFP) to procure various National Stock Numbers (NSNs) related to Collins Aerospace products, specifically targeting ten items for sole source award. This procurement is part of a strategic initiative to support various weapon systems and operational platforms, with the Original Equipment Manufacturer (OEM) identified as the sole source for these items, which will be added to existing Long-Term Contracts. Interested non-OEM suppliers and surplus dealers are encouraged to express their interest and provide documentation to demonstrate their capability to supply the required items, with responses due by March 6, 2025. For further inquiries, potential respondents can contact Karl Bryan at Karl.Bryan@dla.mil or Janae Brown at Janae.Brown@dla.mil.