Inaugural Flight of the HALO-Proteus Promises Low-Cost, High-Speed Communications for Business.

MOJAVE, Calif.--(BUSINESS WIRE)--Sept. 22, 1998--

Flight puts Angel One Step Closer to Delivering

Low-Cost Wireless Communications 

Several hundred people from the communications industry traveled to the desert north of Los Angeles this morning to witness what can become a dramatic breakthrough in wireless communications.

Joining executives from Angel Technologies, Wyman-Gordon Company (Nasdaq:WYMN), Scaled Composites and Raytheon Systems Company (NYSE: RTNA, RTNB), the assembled crowd watched the first public flight of the HALO- Proteus(TM) high altitude aircraft, uniquely designed to provide wireless communications services to metropolitan cities worldwide.

"The Inaugural Flight of the HALO-Proteus marks a major milestone toward the fulfillment of our vision to deliver low cost wireless communications services at a time when demand for interactive connectivity is growing at an unprecedented rate," said Marc Arnold, Chairman and CEO, Angel Technologies.

"We congratulate Burt Rutan and his talented team at Scaled Composites on this special occasion."

The attendees watched the HALO-Proteus aircraft take off, climb at a steep angle and perform a variety of maneuvers demonstrating the plane's unique capabilities. The plane was piloted by Mike Melvill, Proteus Chief Test Pilot, and Peter Siebold, Proteus Flight Test Engineer, Scaled Composites.

"The plane performed flawlessly," Melvill said following the flight. "It can climb at 4,000 feet-per-minute, handles beautifully and takes off and lands easily. It is remarkably stable and will be well suited to the Angel HALO mission as a reliable communications platform. We couldn't be more pleased."

"Given the business requirements proposed by Angel, we designed an aircraft for economical and reliable access to the stratosphere," said Burt Rutan, president, Scaled Composites and designer of the aircraft.

"The Proteus has long thin wings like our Voyager round-the-world plane, but the similarity stops there. The Proteus' strong structure can withstand more G-force than a typical business jet. It has been designed from the start to be robust and reliable."

"I've been around aircraft of all kinds. The Proteus is truly unique," commented Allan McArtor, former FAA Administrator and senior executive at Federal Express. "The HALO-Proteus has the potential to open a whole new segment of aviation, the carriage of data instead of people or cargo."

The HALO-Proteus aircraft, named for the Greek god able to change its physical form at will, is a High Altitude Long Operation (HALO(TM)) aircraft which sports a canard wing, an interchangeable center fuselage and twin fan jet engines.

"HALO-Proteus can carry a communications payload larger than typical satellites and provide them with more than 25 Kilowatts of power. The aircraft will form the apex of Angel Technologies' HALO Network(TM)," said Angel's Chief Technology Officer, Nicholas J. Colella.

"We are designing a network capable of delivering 16 Gigabits per second of capacity directly over the center of a large metropolitan center," noted Angel's President, Peter H. Diamandis.

"Our current plans are to deploy the HALO Network over Los Angeles in 2000. Businesses in LA will be able to gain access to the Internet or their corporate LAN at data rates ranging from 1 to 10 Megabits per second at a fraction of today's prices." About Angel Technologies ------------------------

Angel Technologies Corp., with headquarters in St. Louis, Mo., is a privately-held wireless communications company using proprietary High Altitude Long Operation (HALO) aircraft to deliver services worldwide.

Augmenting terrestrial towers and orbiting satellites, Angel's HALO aircraft will fly fixed patterns in the stratosphere over major cities to deliver metropolitan wireless services at lower cost, with increased flexibility and improved quality of service.

Teamed with corporate partners, Angel will deliver a variety of fixed and mobile wireless services including voice, data and video. The HALO Network will enable individual consumers and businesses to send and receive data at multi-megabit per second rates. It will be replicated over metropolitan centers throughout the world.

The HALO-Proteus aircraft has been designed to provide the commercial communication industry a reliable alternative infrastructure that can be deployed instantly, even when terrestrial infrastructure is missing or incomplete.

Applications that will benefit most from the availability of airborne deployment will be new broadband data services in developed countries and wireless telephony services in the developing world.

Equipped with suitable payloads, HALO-Proteus aircraft will deliver high-capacity, high-quality services while positioned 10 miles above metropolitan regions. The HALO-Proteus aircraft with its payload will create a cellular pattern covering an area comparable to several hundred cellular towers. About Wyman-Gordon Company --------------------------

Wyman-Gordon Company (Nasdaq:WYMN) is a leading manufacturer of high-quality, technologically-advanced forgings, investment castings and composite structures for use in the commercial and defense aerospace, commercial power and energy, and performance product markets. Additional information can be found at website: http://www.wyman-gordon.com. About Scaled Composites -----------------------

Scaled Composites Inc. is an aerospace and specialty composites development company located in Mojave (about 80 miles north of Los Angeles).

Founded in 1982 by Burt Rutan, Scaled has a broad experience in air vehicle design, tooling, and manufacturing, specialty composite structure design, analysis and fabrication, and developmental flight test.

Scaled is a subsidiary of the Wyman-Gordon Company, North Grafton, Massachusetts. Additional information can be found at website: http://www.scaled.com. NOTE TO EDITORS: Angel Technologies(TM,) HALO(TM), HALO-Proteus(TM), HALO Network(TM) and Cone of Commerce(TM) are trademarks of Angel Technologies Corp. All other trademarks and trade names are the property of their respective companies.

This press release contains forward-looking statements made in reliance upon the safe harbor of the Private Securities Litigation Reform Act of 1995.

Such forward looking statements involve a number of assumptions, risks and uncertainties that could cause actual results of the Company to differ materially from those matters expressed in or implied by such forward-looking statements.