Northrop Grumman Highlights Civil Defence and National Security Capabilities at Counter Terror Expo 2011 Exhibition, London

LONDON, April 18, 2011 - Northrop Grumman Corporation (NYSE: NOC) will highlight a range of its
products and capabilities dedicated to civil defence, national security and
resilience at the Counter Terror Expo 2011 conference and exhibition being
held in London.

Counter Terror Expo, the international exhibition and conference
dedicated to addressing the continuing worldwide threat from terrorism, takes
place from 19-20 April in the Grand Hall, Olympia Exhibition and Conference
Centre, London. The Northrop Grumman exhibit will be at stand F50.

"Security solutions are a core capability for Northrop Grumman. From
unmanned ground vehicle systems for improvised explosive device [IED]
clearance, to chemical, biological, radiological, nuclear incident [CBRN]
monitoring and analysis, and cyber security, our technologies and systems
integration expertise put us at the forefront of international capabilities
available to meet the challenges of today's ever changing terrorist threat,"
said Sir Nigel Essenhigh, chief executive of Northrop Grumman's Information
Systems sector Europe.

Northrop Grumman U.K. will showcase its civil defence and security
solutions with equipment, displays and presentations of key technologies.

On display will be a range of Northrop Grumman's industry-leading
unmanned ground vehicles including the Wheelbarrow Mk9 and the versatile
Caliber T5 and Mk3 vehicles. The Wheelbarrow Mk9 is the enhanced version of
the Wheelbarrow vehicle for the remote handling of hazardous threats
including bomb disposal, tactical and surveillance operations. Designed,
developed and manufactured in the U.K. by Northrop Grumman at its facility in
Coventry, the Mk9 vehicle includes advanced technology and performance
features for civil and public security applications.

The Wheelbarrow Mk9 vehicle will demonstrate its capabilities in vehicle
borne IED clearance as part of the explosive ordnance disposal (EOD) Live
Product Demonstration Showcase.

Also on display will be the Integrated Tactical Rapid Assessment of CBRN
Environments (I-TRACE) system, Northrop Grumman's new man-portable capability
for the monitoring of CBRN incidents and the collection and handling of
related data. I-TRACE facilitates decision support and enhances situational
awareness and information sharing among emergency response organizations.
Analysed data is provided to users through a web portal. I-TRACE requires no
specialist vehicle installation and can be rapidly deployed using existing
"blue light" emergency services vehicles.

Highlighted will be Northrop Grumman's capabilities in cyber security
including the application of the company's federated cyber test range for the
resilience testing of large scale networks, cyber diagnostics and cyber team
training. Formally opened in October 2010 at its Fareham facility, the cyber
test range is the only one of its type outside the U.S. and is the U.K.'s
only commercially available cyber range facility.

Northrop Grumman's biometric data capture and information search
capability for rapid identity management will be on display. BioTRAC is an
electronic mobile scanning system integrated with a ruggedized laptop
computer which enables fingerprint, face and iris image capture together with
rapid biometric matching capabilities. Captured biometric information can be
sent to local policing databases as well as national and international
repositories.

Northrop Grumman will demonstrate its Command Point computer-aided
dispatch application. The company is currently designing, developing and will
implement a new computer-aided dispatch system using Command Point for the
London Ambulance Service to handle emergency calls and ambulance movements.
The new system will be fully operational to support the London Ambulance
Service during the 2012 London Olympics.

Exhibited also will be the company's tactical command and control
systems, Integrated Tactical Command and Control Services (I-TaCCS) and
Integrated Joint Operational Command and Control Services (I-JOCCS). The core
software component of I-TaCCS is used around the world and is in service in
more than 40 countries with 100,000 users. Presentations will be available on
these systems.

Northrop Grumman has a strong presence in the U.K. and operates from
primary locations in London, Fareham, Chester, Coventry, Hendon, New Malden,
Peterborough, RAF Waddington and Solihull.

Northrop Grumman is a leading global security company whose 75,000
employees provide innovative systems, products and solutions in aerospace,
electronics, information systems, and technical services to government and
commercial customers worldwide. Please visit www.northropgrumman.com
for more information.

Ken Beedle of Northrop Grumman, +44-207-747-1910, +44-7787-174092, Ken.beedle at euro.ngc.com