Alion Awarded $2.8 Million Navy Contract for Water Purification Technology; Science and technology company to lead the design and fabrication of demonstrator system.

MCLEAN, Va. -- Alion Science and Technology was awarded a $2.8 million cost plus, fixed fee contract from the Naval Surface Warfare Center, Carderock Division - Philadelphia (NSWCCD - Philadelphia) for the detailed design and fabrication of a second generation, high capacity, high purity water purification unit in support of the Office of Naval Research Expeditionary Unit Water Purification (EUWP) program.

Under the contract, Alion will act as the program manager for detailed design and fabrication of an advanced, high capacity, high purity water purification technology demonstrator scheduled for seawater desalination testing at Port Hueneme, CA in June 2007. Through project management and budget control, Alion will be responsible for all costs associated with the project and ensuring the demonstrator meets NSWCCD - Philadelphia performance goals and is delivered on time for testing.

The advanced water purification technology will reduce the power required to make potable and high purity water. It will also reduce operational and maintenance costs, reduce size and weight, and increase reliability and availability compared to current water purification systems. The demonstrator will also incorporate the latest technology advancements in water purification.

"After performing the conceptual design studies for the Naval Surface Warfare Center, Carderock Division-Philadelphia, on this water purification plant, we are looking forward to the opportunity to work as the program manager on the detailed design and fabrication of the demonstrator," said Ken Siegman, Alion Senior Vice President.

Alion's team member, Village Marine Technology, will complete the detail design and fabrication of the plant. Work will be completed between February 2006 and June 2007. The work will be completed in Pittsburgh, PA and Gardena, CA.

About Alion Science and Technology

Alion Science and Technology is an employee-owned technology solutions company delivering technical expertise and operational support to the Department of Defense, civilian government agencies and commercial customers. Building on almost 70 years of R&D and engineering experience, Alion brings innovation and insight to multiple business areas: defense operations; modeling & simulation; wireless communication; industrial technology; chemical, biological, nuclear & environmental sciences; information technology; and naval architecture & marine engineering. Based in McLean, Virginia, Alion has more than 2700 employee-owners at major offices, customer sites and laboratories worldwide. For more information, call 877.771.6252 or visit Alion online at www.alionscience.com.

This press release contains information about management's view of Alion's future expectations, plans and prospects that constitute forward-looking statements for purposes of the safe harbor provisions under The Private Securities Litigation Reform Act of 1995. Actual results may differ materially from those indicated by these forward-looking statements as a result of a variety of risk factors and uncertainties discussed in documents periodically filed by Alion with the SEC. Due to such uncertainties and risks, readers are cautioned not to place undue reliance on such forward-looking statements, which speak only as of the date hereof.