The Department of Defense, specifically the Norfolk Naval Shipyard, is seeking qualified vendors to provide maintenance and calibration services for the Model 2500ST Two-Pressure Humidity Generator. The primary objective is for the selected contractor to evaluate and repair the equipment while adhering to strict calibration standards, ensuring traceability to recognized measurement systems, as outlined in the attached Statement of Work. This procurement is crucial for maintaining the operational integrity of calibration services provided by the Mid-Atlantic Regional Calibration Center (MARCC) for various government assets. Interested parties must submit their responses to Jordan Moore at jordan.e.moore.civ@us.navy.mil and Denise Swain at denise.j.swain.civ@us.navy.mil by 11:00 A.M. on April 25, 2025, as this opportunity is intended for sole source under the 8(a) program and is not a request for proposals.