Mid-Atlantic Services (MAS) was started in 1980 by Michael and Rosemary Everton of Seaford, DE. In the beginning, MAS was limited to cleaning residential homes and restoring tile floors for department stores, convenience stores, and factories. With the pristine quality of work MAS provided, the company started receiving commercial clients. Before they knew it, they were providing services for Du Pont, Con-Agra, and other factories in Sussex County. In 1985, MAS incorporated and became Mid-Atlantic Services, A-Team Corp.