Heating, Ventilation, Air Conditioning and Refrigeration Advisory Committee Chairman at Seward County Community College/Area Technical School, Carl Lynn, spent the day with HVAC students giving an intensive hands-on class on sheet metal fabrication. Lynn, owner of HAVOC Supply of Liberal, is a master sheet metal fabricator and has spent decades designing and fabricating HVAC systems. The students learned various seam methods, and they built various sheet metal fittings using a newly purchased lock-former machine. For information on the program, contact Chris Hickman at 620-417-1679 or chris.hickman@sccc.edu. April is National Community College Month.