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MIL 3 Receives Network World's Inaugural Best of Tests Award

IT DecisionGuru Takes Prestigious Award with Highest Overall Score Among All Products Tested in All Categories

WASHINGTON, DC -- December 9, 1999 -- MIL 3, Inc., a leading provider of decision-support software for networks and applications, today announced that the company's flagship software, IT DecisionGuru, is a recipient of Network World magazine's Best of Tests award for 1999 after receiving the highest score among the 169 hardware and software products tested by Network World over the past ten months.

The award, announced in the magazine's November 15 issue, recognizes IT DecisionGuru for its ability to help "build a model of network devices and protocols, and test-drive network designs." Network World goes on to observe, "IT DecisionGuru predicts network activity and application performance using a combination of packet-by-packet traffic analysis and mathematical equations, making it easier to allocate bandwidth and avoid potential overloads."

About Network World's 1999 Best of Tests Award

The 1999 Best of Tests Awards represent Network World's top ranked product reviews, selected from a field of 169 reviews conducted during the first ten months of the year. Network World is the premier source of objective, authoritative reviews in the networking marketplace. Network World produces both single-product and comparative product reviews on a weekly basis. As part of the Network World Test Alliance, the publication partners with the most qualified industry experts, network integrators and universities to conduct the product reviews.

About MIL 3

The OPNET family of Decision Support Software reduces the considerable cost, labor and risk involved in the development of networking hardware and systems, the management of IT resources, the deployment of applications, and the delivery of communications services. The flagship products are OPNET Modeler, for research and development, and IT DecisionGuru, for service providers and IT decision makers. Using advanced modeling and simulation, these products enable MIL 3 customers to easily and quickly understand the impact of a design or proposal and make any necessary adjustments before committing to a course of action. MIL 3's best-in-class products are complemented by outstanding consulting, training and support services.

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OPNET Media Contact:
Margarita Castillo
OPNET Technologies, Inc.
(240) 497-3000
Media@opnet.com
www.opnet.com

OPNET Investor Relations:
Mel Wesley
OPNET Technologies
(240) 497-3000
ir@opnet.com
www.opnet.com