Previous experience in the installation, operation, troubleshooting, maintenance, and repair of all components and/or systems (chillers, boilers, piping systems, compressors, cooling towers, pumps, water treatment systems, controls, etc.) pertaining to the various utility generation and distribution systems noted above. A specially trained mechanic skilled in operating and servicing utility systems (chilled water, steam, and compressed air generation/distribution systems and related equipment/components; water/drainage distribution systems; and other related systems).