Replacing an A/C system on the rooftop of a 12-story office building over a weekend in the heat of August. Converting 1,000-ton chillers in restricted quarters in a high-tech fabricating plant where continuous temperature control is essential. Or servicing equipment failures on the hottest day on record in the Valley. No retrofit or repair project is beyond the capabilities of Metro's highly trained Field Service Technicians. These factual examples are representative of the challenges they face routinely.