The Department of Defense, through the NAVSUP Fleet Logistics Center Norfolk, intends to award a Sole Source Firm Fixed Price contract to Mandex, Inc. for maintenance services related to the Integrated Electronic Security System (IESS) and Physical Access Control Systems (PACS) at the Naval Submarine Medical Research Laboratory (NSMRL) in Groton, Connecticut. The procurement is justified as sole source due to Mandex, Inc.'s unique qualifications, having installed the security system equipment and being the only vendor capable of servicing it due to proprietary limitations. This contract is crucial for ensuring the operational integrity and security of the laboratory's facilities, with challenges to the sole source determination accepted in writing until a specified deadline. Interested parties may contact Jessica Thompson at jessica.a.thompson58.civ@us.navy.mil for further inquiries.