Amesbury: Alan Sunnerberg, vice president of operations for ARC, left, shows a component of an F-18 fighter jet the Amesbury company worked on to, from left, Mayor Thatcher Kezer, Congressman John Tierney, Joseph Fahey, Amesbury's economic development chief along with company president, Chip Madden. They and officials with the Massachusetts Manufacturing Extenstion Partnership (MASSMEP) traveled to the lower millyard and the home of Amesbury’s ARC Technologies, Inc. to showcase how partnerships between the public and private sector can give companies a competitive edge. Bryan Eaton/Staff Photo

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