-Collaborative program demonstrates functionality of the world’s first commercial stratospheric communications network-

Mojave, CA (June 22, 2000) – In flight tests currently being conducted over Mojave, Calif.~~ornia~~, Angel Technologies (AngelHALO.com), a privately held St. Louis-based company, and Raytheon Company (NYSE: RTNA, RTNB), with headquarters in Lexington, Mass., successfully demonstrated that a stratospheric aircraft will be a competitive alternative to deliver wireless, high-speed, two-way Internet and multimedia communications services to major metropolitan areas.

Angel Technologies’ HALO-Proteus™ stratospheric aircraft is manned by two pilots and flies at an altitude of more than 45,000 feet above the Earth. The tests employ a Raytheon-designed broadband payload on the HALO-Proteus™ aircraft and two portable ground stations. An RF switch in the payload switches the circuits among four channels encompassed in two antenna beams pointed at the ground stations.

Tests of the HALO Network are showing the viability of broadband wireless point links at record-breaking speeds of 51.8 Mbits/second (OC-1 rates). To put the HALO Network speed in perspective, a 100,000-page document transmitted over a 28.8 Kbits/second computer modem would require seven hours. The HALO Network can transmit the same amount of data in just 16 seconds.

“Compared to wired alternatives, such as DSL, cable modems and fiber access, airborne broadband communications can reach customers wherever they may be in the metropolitan area and offers a wider range of services,” said Marc Arnold, CEO Angel Technologies.

When the aircraft begins limited commercial service in 2001, pilots will fly in eight-hour shifts, operating three aircraft per metropolitan market to deliver seamless 24-hour communications. Users will access the HALO Network through a small receiver dish installed at home or work.

“Raytheon Company has been working with Angel since 1998 and our efforts have produced a completely new and innovative means of delivering high-speed broadband communications services,” said Bruce Snider, director of the company’s Electronic Systems New Ventures organization.

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Press Release, June 22, 2000

The HALO Network will deliver a broad array of advanced, data-intensive services including video/audio streaming, video conferencing, electronic transaction processing, high-speed Internet access and large data file transfers, CD-quality audio and video entertainment, interactive distance learning, telemedicine, e-commerce and virtual private networks or Intranets.

About Angel Technologies

Angel Technologies Corporation, the owner of the HALO-Proteus aircraft, is using proprietary High Altitude Long Operation (HALO)ä technology to deliver metropolitan wireless services city-by-city. Augmenting terrestrial towers and orbiting satellites, Angel’s HALO aircraft are designed to fly in fixed patterns in the stratosphere above major cities to deliver metropolitan wireless services at low cost, with increased flexibility and improved quality of service. Working with corporate partners, Angel will deliver a variety of fixed and mobile wireless services including voice, data and video.

The HALO-Proteus aircraft is built by Precision Castparts Corporation (NYSE: PCC), a

40 percent shareholder of Angel Technologies, and parent company of Scaled Composites and Scaled Technology Works. The HALO-Proteus prototype has been in flight tests for two years and flew non-stop between the U.S. and France where it made its international debut at the Paris Air Show last year. Positioned 10 miles above metropolitan areas, the HALO-Proteus aircraft and its payload create a beam pattern covering an area comparable to several hundred cellular towers. The HALO-Proteus will 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. Additional information about Angel Technologies and the HALO Network can be found at the website, www.AngelHALO.com.

About Raytheon Company

Raytheon Company, (NYSE: RTNA, RTNB) based in Lexington, Mass., is a global technology leader that provides products and services in the areas of commercial and defense electronics and business and special mission aircraft. Raytheon has operations throughout the United States and serves customers in more than 80 countries.

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Note to Editors: Angel Technologies, HALO, HALO-Proteus, HALO Network, and Cone of Commerce are trademarks of Angel Technologies Corporation. All other trademarks and trade names are the property of their respective companies.

Photos of the HALO-Proteus are available by contacting Federal City Communications.

CONTACT: Diane Murphy, Federal City Communications

Phone: 202-662-1280; e-mail Diane@AngelHALO.com