This opportunity is for commercial supplies with embedded services to perform inspection, maintenance, and calibration of relays and transformers at the Arnold Engineering Development Complex (AEDC) at Tunnel 9 in White Oak, MD. The contractor will conduct standard electrical inspections, establish a baseline for current equipment, provide repair recommendations, and calibrate protective relays as outlined in the Statement of Work. To receive the necessary supporting documents, vendors must formally request them by 3:00 PM Central Standard Time on Thursday, 7 May 2026. No budget information is specified in the description. The work aims to ensure optimal performance, reliability, and safety of the transformers through preventive and corrective maintenance.