SALISBURY -- David William Christensen, of Salisbury, died Tuesday May 31, 2016, at Coastal Hospice at the Lake. Born in San Francisco, he was the son of the late Chris and Willma Hallowell Christensen. He held degrees from the Massachusetts Institute of Technology, the University of California at Santa Barbara and the American Graduate School of International Management. He worked for Bechtel for many years in San Francisco, then the Aramco Oil Co. in Saudi Arabia. He moved to Salisbury in 2005. He is survived by his wife of 52 years, Felicity Ann Christensen; children, Paul Christensen and Karen Thickman; six grandchildren; brothers, James Christensen and Paul Christensen; and several nieces and nephews. A visitation was held Friday June 3, 2016, at Holloway Funeral Home in Salisbury; interment will be private.