Thornton is on the Executive Board of the New Jersey Association of Counties. He is a member of Southern New Jersey Freeholders’ Association, American Legion Post 193, Cape May County Union League, AARP, Villas Fishing Club, Local 18 AFL-CIO and a former member of Rotary and Optimist. A former 8-year member of the Board of Elections, Thornton was a member of the 1980 Presidential Electoral College.
Administration, Clerk of the Board, Emergency Management, Human Rescources, Tourism, Public Information, Culture & Heritage, County Museum, Facilities and Services, Print Shop, Information Technology, Finance & Purchasing, Special Projects, and Division of Veterans' Services.
911 Advisory Board, Industrial Pollution Control Financing Authority, Municipal Utilities Authority, Pinelands Commission, Atlantic Cape Community College, Culture & Heritage Commission, Planning Board, Safety Board, Solid Waste Advisory Council, Solid Waste Amendment Plan Committee, South Jersey Transportation Planning Organization, Member - ACCC School Board of Estimate, Member - Special Services School Board of Estimate and Member - Technical School Board of Estimate.
Thornton was elected freeholder in 1995. A former freeholder for 11 years (1976-1987) and former director for 3 years, Thornton attended Kellogg Community College and the University of Maryland Overseas Extension. New Jersey Association of Counties Freeholder of the Year in 2015. An 12-year veteran of the U.S. Air Force, Thornton attended technical schools including Air Traffic Controller, Space Tracking and Telemetry, Automatic Radar, Management and Supervision and Non-Commissioned Officers Academy. Thornton is the proud father of 2 sons, Christopher and Mark, 2 granddaughters Kirby and Shelby, and 2 grandsons Christopher David and Matthew Mark.