The U.S. Embassy in Mexico City requires a contractor to provide preventive maintenance service for its UPS system, with a performance period of one base year. The solicitation is not yet issued but will be posted on SAM.gov when available. All responsible sources may submit a quotation, and the government may award without discussions. Offerors must be registered in SAM prior to proposal submission to be considered responsive. The location for performance is Mexico City, and no budget amount is specified.