Intelsat Mountainside Satellite Facility, Maryland

Intelsat, often called the largest communication satellite company in the world, controls its network of more than 50 satellites from three sites in the USA, including this one in Hagerstown, Maryland. The facility is also a teleport. Intelsat started out as the International Telecommunications Satellite Organization, an intergovernmental consortium, in 1964. It became a private international company in 2001, and is headquartered in Luxembourg.