With Locations in Los Angeles, San Diego, Bakersfield, Colton and Orange, the JJATC Air Conditioning and Refrigeration training program has been providing students and members alike with the knowledge and experience to become successful leaders in their prospective fields and in their communities. Entry level MES / Tradesman Classifications, intermediate Apprentice Training, and Professional Journeyman, and Journeyman continuing education programs, allow our members to take the necessary steps toward becoming a Certified General Foreman. M.E.S / Tradesman, Apprentice, Journeyman, and Journeyman C.E.P courses all available here. Call the location nearest you today.