Press Release

November 21, 2002

Motient Announces Immediate Availability Of New RIM 857 With Increased Memory

New RIM Wireless Handheld Features 8MB of Memory for Expanded Applications

Lincolnshire, IL - With the announcement that Research In Motion Limited (RIM) (NASDAQ: RIMM; TSX; RIM) is expanding the memory of its RIM 857 Wireless HandheldTM to eight megabytes from five, Motient Corporation, (OTC:MNCP) a major distributor of the RIM 857 for its national data network, foresees an opportunity to increase the productivity and efficiency of its enterprise customers by wirelessly extending the power of their existing and future applications. Despite the added memory capacity and application potential, Motient has no plans to increase prices.

"The expanded memory will have immediate benefits for our wireless email customers, whether they use BlackBerry by Motient, eLink, or other wireless applications," said Dan Croft, senior vice president of marketing and business development for Motient. "Not only will this enhance availability of current applications for our customers, but it will make way for future application enhancements requiring additional memory capacity. We are excited to be able to offer this new enhanced product from RIM at no additional cost to our customers."

"This is evidence of Motient's commitment to servicing the corporate enterprise market with the latest wireless data products and services. We have had excellent success in the wireless email market, and look forward to the numerous additional applications that can be accommodated in this new RIM 857. With the efficient memory use of the core applications, the RIM 857 leaves plenty of effective available application and user memory space," added Walt Purnell, Motient's President and CEO.

Motient's assessment of the potential benefits of the expanded memory of the RIM 857 is echoed by other key industry players: "Motient has enjoyed strong success in selling and servicing their customers with RIM products and Motient's nationwide wireless network. The enhanced RIM 857 will support additional applications for users and open new opportunities for RIM and Motient to expand our customer base," said Don Morrison, Chief Operating Officer of RIM.

"As Motient's largest reseller of the RIM 857, SkyTel believes the expanded memory capability of the new device will enhance its appeal to our current customers," said Kerry McKelvey, president of SkyTel Corp. "It will be an attractive offering to new SkyTel customers looking for a robust and reliable wireless e-mail solution to expand their business productivity."

"With the increased memory of the RIM 857, customers looking to access back-office business applications can leverage this added capacity for such innovative future uses. It's all about bringing additional value to our wireless browser customer base, that allow GoAmerica solutions on Motient to be the market leader," said Joseph Korb, Executive Vice President of GoAmerica.

About Motient Corporation:

Motient Corporation (www.motient.com) owns and operates the nation's largest two-way wireless data network- the Motient™ network - and provides a wide-range of mobile and Internet communications services principally to business-to-business customers and enterprises. The company provides eLink™ and BlackBerry™ by Motient two-way wireless email services. Motient's wireless email services operate on the RIM 850 and RIM 857 Wireless Handhelds™ and Motient's MobileModem for the PalmTM V series handhelds. Motient serves a variety of markets including mobile professionals, telemetry, transportation and field service, offering coverage to all 50 states, Puerto Rico and the U.S. Virgin Islands.

eLink is a service mark and Motient is a trademark of Motient Corporation. The BlackBerry and RIM families of related marks, images and symbols are the exclusive properties of, and trademarks of Research In Motion Limited and are used by permission. "BlackBerry by Motient" - used by permission. Palm V is a trademark of Palm, Inc.

This release contains forward looking statements, including statements regarding Motient's continuing operations and business, and Motient's future financial performance. Factors that could cause actual results to differ materially from those in the forward looking statements in this news release are described in Motient Corporation's registration statement on Form S-1 (File No. 333-87844) and in Motient's other periodic filings and reports with the Securities and Exchange Commission. Copies of such reports and filings are available upon request from Motient's Investor Relations Department.