Raytheon Demonstrates New Submarine Communications Technology for UK Royal Navy

MARLBOROUGH, Mass., June 1, 2009 /PRNewswire/ -- Raytheon Company (NYSE: RTN)
demonstrated the ability to communicate in real time with a submerged
submarine at classified speeds and depths.

This capability, which addresses one of the most significant shortfalls in
submarine communications, was exhibited for the United Kingdom's Royal Navy
during an at-sea trial of Raytheon's Deep Siren Tactical Paging (DSTP) system.

The U.K. Ministry of Defence reported that Deep Siren demonstrated "the first
step toward a transformational capability that will change the way we operate
submarines in the future."

The evaluation, which took place during the U.K. Royal Navy's TAURUS 09
deployment, follows U.S. Navy testing conducted in 2008 that culminated with a
successful military utility assessment.

Raytheon is also currently working on airborne certification of Deep Siren,
which will allow the system's buoys to be deployed via aircraft.

"The Deep Siren system is a vital command and control communications link that
provides never-before available capability," said Jerry Powlen, vice
president, Network Centric Systems Integrated Communications Systems. "This
system once again demonstrated its utility and reliability, proving that we
are ready to move forward with production."

The trial validated that DSTP system buoys can be used to communicate with
submarines at underwater ranges significantly greater than 100 nautical (115
statute) miles. It also demonstrated that Deep Siren can significantly
accelerate the process to communicate with a submarine by passing tactical
messages between a commander and submarine in real time. The U.K. Royal Navy
used Deep Siren to share contact information with a submarine, providing
positions for both friendly and enemy forces.

Raytheon's partners on the DSTP system are RRK Technologies, Ltd. and Ultra
Electronics Maritime Systems.

Raytheon Company, with 2008 sales of $23.2 billion, is a technology and
innovation leader specializing in defense, homeland security and other
government markets throughout the world. With a history of innovation spanning
87 years, Raytheon provides state-of-the-art electronics, mission systems
integration and other capabilities in the areas of sensing; effects; and
command, control communications and intelligence systems, as well as a broad
range of mission support services. With headquarters in Waltham, Mass.,
Raytheon employs 73,000 people worldwide.

Note to Editors:

TAURUS 09 is a routine deployment of the Royal Navy's Amphibious Task Group.
Raytheon's Deep Siren system employs expendable buoys that, when contacted
through the Iridium satellite network, enable long-range underwater
communications using acoustic signals.

Contact:
Meredith Stoffel
508.490.3149
Meredith_Stoffel@Raytheon.com

SOURCE Raytheon Company

Meredith Stoffel of Raytheon, +1-508-490-3149, Meredith_Stoffel@Raytheon.com