Mack is the oldest guy on the work crew. He is the supervisor, and drives around in a golf cart checking in with everyone. When I first started here I was confused, because it seemed like Mack didn’t do any actual work. It was explained to me that Mack had been the first employee for this company almost 40 years ago. He was too old to perform the functions of an HVAC tech, but out of loyalty and respect he was allowed to keep working. Mack didn’t want to retire, he feels that HVAC work is his life, so now he just hangs around the worksites, doling out wisdom and free advice to the crew. I have now been a part of this HVAC crew for three years, and Mack has become a mentor to me. His body may be old and slow, but his mind is as sharp as ever. The guy knows more about heating and cooling systems than anyone I’ve ever met, and yet he never got his high school diploma! Mack started the job before it was required to have HVAC certification, so all his vast wealth of knowledge was collected on the job. Mack had to learn things as he went along, but he remembers each and every detail. Mack is like a human Youtube tutorial, because he can explain any heating or cooling issue quickly and concisely. No matter how old he may get, I hope that Mack always stays with the HVAC crew, because his presence makes my job a whole lot easier.