Mark joined the Monitor in 1996 and has since written from Boston, the San Francisco Bay Area, the Pentagon, and India. In addition to reporting from Pakistan and Afghanistan during his time in South Asia, Mark has also written on issues of sports and science. He has covered seven Olympic Games and attended events at NASA's Jet Propulsion Laboratory, including the landing of the Mars rover Opportunity. After returning to Boston in 2009, Mark served as both deputy national news editor and national news editor.