The Department of Defense, through the Naval Supply Systems Command Fleet Logistics Center San Diego (NAVSUP FLCSD), intends to award a sole source contract to Occupational Health Dynamics (OHD) for the calibration and maintenance of twenty-one Quantifit Quantitative Respirator Fit Testing Instruments. These instruments are critical for ensuring compliance with Occupational Safety and Health Administration (OSHA) regulations regarding respiratory protection, necessitating annual calibration and maintenance to maintain their precision and reliability. The contract is structured for a five-year period starting July 9, 2025, with optional yearly extensions, and includes a three-day turnaround for in-house service and comprehensive warranty support. Interested parties should submit capability statements to Contract Specialist Jheanna Poblete at jheanna.u.poblete.civ@us.navy.mil by the specified deadline, as this notice serves as an intent to sole source and not a solicitation for competitive bids.