General Building Facility Systems including roofing drains, plumbing, drainage both sanitary and regular, fire system operation, fire system trouble response, dry riser inspections, fire sprinklers maintenance, fire control systems for tumblers, diesel and electric fire pumps, insurance and inspection audit walks, refrigerators, box and portable coolers, ice machines, refrigerant handling, RPZ maintenance, emergency generators, pipefitting, potable water systems, plumbing basics, sewer cleaning, measurement devices, and use of general shop equipment, sump pumps. Compressed Air Systems and their associated equipment including air compressor operation and maintenance (limited to filters and inspections mostly), air dryers, cooling towers, condensate collection and drains, air supply tanks, and air piping / tubing from main supply line to point of use with regulators and filters.