The Dorsey Road Warehouse is a U.S. National Security Agency warehouse located at 1472 Dorsey Road in Hanover, Maryland. Built between 1995 and 1996 at a cost of $10 million, the warehouse is a storage facility for sophisticated signals intelligence and communications security equipment, including spy satellites, as well as office equipment and supplies.[1][2] The warehouse covers 281,000 square feet (26,100 m2) and is 30 feet (9.1 m) tall.[3]