The Mid-Atlantic, known commonly as the MAS, is composed of two separate regions: the New Jersey Region (NJR) and the South Atlantic. The NJR has two cabinets that are responsible for communicating with chapters and planning one-day events, while the South Atlantic has one cabinet responsible for communicating with chapters.
MAS States: New Jersey, Delaware, Maryland, Pennsylvania, Virginia, North Carolina, Texas
http://states.jsa.org/midatlantic/mas-liberty-2/mas-liberty-articles/