NASB Redevelopment MRRA is responsible for managing the transition of Naval Air Station Brunswick and its Topsham Annex from military to civilian use. NASB closes in 2011. With its world class aviation complex, 2 million sq. ft. of commercial and industrial space, 1000+ acres of natural and recreation areas, the redeveloped base will be a special place to live, work, learn and play. Mrra.us~Site InfoWhoisTrace RouteRBL Check