This is a small business set-aside solicitation for comprehensive maintenance, repair, towing, transport, and mobile mechanic services for Government-owned off-road vehicles, including preventive maintenance, diagnostics, and emergency repairs. The contractor must provide all labor, parts, materials, and management, with services performed via on-site mobile support and at contractor facilities. The anticipated award is a firm-fixed-price purchase order with a 12-month base period beginning September 15, 2026, plus four 12-month option periods through September 14, 2031. Evaluation will consider technical capability, past performance, and price, with technical and past performance significantly more important than price. Offerors must be registered in SAM and submit a price proposal with labor categories, hours, and rates.