This document provides details on a federal contract opportunity for bus overhaul services. The National Park Service Intermountain Region is soliciting bids under solicitation number 140P1521Q0003 for bus overhaul services for its fleet at Grand Canyon National Park. Bids are due by an unspecified date. The contract will require the overhaul and repair of buses to manufacturer's specifications, including mechanical, electrical and body work services. Pricing and payment terms were not included in the provided file, which contained only part of a technical manual rather than the full solicitation document.