The Middlesex 3 Coalition (M3) is a regional partnership of nine Middlesex County communities, including Bedford, Billerica, Burlington, Carlisle, Chelmsford, Lexington, Lowell, Tewksbury, Tyngsborough and Westford, operating with the support of the Massachusetts Executive Office of Housing and Economic Development. M3's mission is to foster economic growth within the Commonwealth, creating jobs and enhancing the overall quality of life in Massachusetts