| Mark Marcario has had a career in managing computer support for universities and a K-12 school district. He was a Cisco systems engineer supporting local and wide area networks for over 22 schools in CA. He worked for Apple Computer on their server products for K-12 education, where he met his wife. He managed a support staff of seven technicians, fixing and repairing computers and printers. Marcario's last position was a SQL programmer specializing in databases for schools. He has trained hundreds of people and organizations from the City of Stockton, CA to the California Highway Patrol. Before coming to OLLI Mark taught technology basics at the Centennial Hills Senior Center.