Iridium Communications, Inc. is a mobile voice and data satellite communications network. Its satellite network provides communication where terrestrial wireless or wireline networks do not exist or are limited. The company's principal lines of business include Land Mobile, Maritime, Aviation, IoT Data Services, Hosted Payloads and Other Data Services, and Government. The Land Mobile business engages in the provision of mobile satellite communications services to the land mobile sector, providing handset services to areas not served or inconsistently served by existing terrestrial communications networks. The Maritime business provides broadband terminals, embedded devices and handsets. Its market space includes merchant shipping, fishing, research vessels and specialized water craft. The Aviation business provides mobile satellite communications services to the aviation sector. Its services are used in commercial and global government aviation applications, principally by corporate jets, corporate and government helicopter fleets, specialized general aviation fleets, such as medevac companies and fire suppression fleets, and high-end personal aircraft. The Iot Data Services provides satellite-based IoT services, which include personal tracking devices and location-based services, heavy equipment monitoring, fleet management, fixed-asset monitoring, asset tracking, resource management, and scientific data monitoring. The Hosted Payload and Other Data Services offer satellite time and location services, which helps augment GPS and provides location, timing and positioning data: inbound connections from the public switched telephone network(PSTN), short message services(SMS), subscriber identity module(SIM), activation, customer reactivation, and other peripheral services: and provides research and development services. The Government business line involves in the provision of mobile satellite communications services to the U.S. government, principally the Department of Defense. Its voice products are used for a variety of primary and backup communications solutions, including tactical operations, logistical, administrative, morale and welfare, and emergency communications. The firm's commercial services include: Postpaid Mobile Voice and Data Satellite Communications, Prepaid Mobile Voice Satellite Communications, Iridium PTT, Broadband Data, and Machine-to-Machine services. Iridium Communications was founded in 2000 and is headquartered in McLean, VA.