The Boeing Company, with headquarters in Chicago, is the largest aerospace company in the world and the United States' leading exporter. It is the world's largest manufacturer of commercial jetliners and military aircraft, and the largest NASA contractor. The company's capabilities in aerospace also include rotorcraft, electronic and defense systems, launch vehicles, and advanced information and communication systems. The company has an extensive global reach with customers in 145 countries and manufacturing operations throughout the United States, Canada and Australia. Boeing and its subsidiaries employ approximately 178,000 people. Total company revenues for 2001 were US$58.2 billion.