This sources sought notice is for market research to identify qualified small businesses to perform annual preventive maintenance, calibration, and remedial repair on 26 OHD Quantifit2 Respirator Test Fit machine units. The contractor will also provide inspection reports, service reports, and calibration certificates. The tentative period of performance is from 31 August 2026 to 30 August 2031. Services will be performed at Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility.