COMSAT Mobile and Tenzing Sign Agreement to Bring In-Flight E-mail and Web Content to Airline Industry.

Business Editors

BETHESDA, Md.--(BUSINESS WIRE)--Sept. 13, 2000

COMSAT Mobile Communications (CMC), a business unit of Lockheed Martin Global Telecommunications (LMGT), has signed a three-year satellite service agreement with Tenzing Communications, Inc. that allows Tenzing to offer its Tenzing OnBoard(TM) services over the CMC air-to-ground communications network.

The Tenzing OnBoard system will enable airline subscribers to use their laptop computers and existing e-mail accounts to send and receive messages while in-flight. In addition to sending and retrieving e-mail with attachments, customers will be able to browse Internet content while in-flight. In addition to the services offered onboard the aircraft, Tenzing provides terrestrial global roaming, Internet access and a frequent business traveler service program aimed at solving connectivity issues for frequent business travelers, no matter where they are on business.

COMSAT Mobile Communications is a world leader in satellite communications for the airline industry and in collaboration with Tenzing, will facilitate the transfer of e-mail and Web services to and from commercial aircraft operating in-flight worldwide.

"The CMC network increases our ability to deliver connectivity solutions to the frequent business traveler," said John Wade, executive vice president of Strategic Alliances for Tenzing. "We are pleased to add COMSAT Mobile to our growing list of service partners."

"Our partnership with Tenzing signifies a major leap forward in aeronautical communications," said Kathryn Y. Holman, vice president and general manager of COMSAT Mobile Communications. "This agreement opens access to Internet content and e-mail to a new group of users - airline passengers."

Tenzing Communications, Inc. is the premier provider of connectivity solutions for the frequent business traveler. Services include in-flight e-mail, terrestrial global roaming capabilities, extensive Web content, a business-focused Web portal - both on the ground and in the air, targeted e-commerce services and frequent content updates throughout the traveler's experience. Tenzing is dedicated to the ease of communication for frequent business travelers, allowing them to use their laptops and existing e-mail addresses for a continual connection to the outside world. More information is available at www.tenzing.com.

COMSAT Mobile's aeronautical services are transmitted over the Inmarsat-3 series of satellites, in geosynchronous orbit 22,300 miles above the equator, to the CMC ground earth stations in Southbury, Conn. and Santa Paula, Calif. From there, communications are transmitted over terrestrial routes to their destination.

COMSAT Mobile Communications, a business unit of LMGT, provides maritime, aeronautical and land mobile satellite services to customers around the world via the Inmarsat satellite system.

LMGT, a wholly owned subsidiary of Lockheed Martin Corporation, is a premier global provider of network services and advanced technology solutions to enterprise, commercial and government customers. LMGT is headquartered in Bethesda, MD and includes the satellite, network and products assets of the former COMSAT Corporation.