Graduate of heating, HVAC, ventilation, air conditioning, and refrigeration apprenticeship program from the U.S. Air Force; Or 2. Must have been an enlisted machinery technician (MK) with the U.S. Coast Guard OR possession of a certificate as a Marine Engineer issued by the U.S. Coast Guard; Or 3. Must have been an enlisted power generation equipment repairer with the U.S. Army; Or 4. Must have been an enlisted gas turbine systems technician, submarine nuclear propulsion plant operator reactor control, utilities man, machinist mate, or engineman with the U.S. Navy; Or 5. Completion of an HVAC certificate or diploma from a BOCES program (900 hours) OR completion of an approved certificate in HVAC, electrical, refrigeration, boiler operations and maintenance, or plumbing from an accredited technical school or technology college (See Note #2) AND two years of qualifying experience as described in EITHER qualification #9 or #10 above.