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Premier Event Attracts Over 200 Government and Industry Leaders

SUNNYVALE, California, May 10, 2010 – Applied Signal Technology, Inc. (AST) (NASDAQ:APSG), a market leader in advanced intelligence, surveillance, and reconnaissance (ISR) solutions, recently hosted its Fourteenth Annual Spring Technology Symposium at its Annapolis Junction, Maryland facility. The two-day event attracted more than 200 participants representing numerous U.S. Government agencies and defense industry professionals.

The 2010 Spring Symposium featured a series of technical seminars and demonstrations that focused on the Company's latest innovations in broadband communications, tactical signals intelligence (SIGINT), and cyber intelligence.

Dr. John Treichler, a national expert in digital and adaptive signal processing and AST's Chief Technology Officer, delivered the symposium's keynote speech on Looking at Emerging Technology Challenges Over the Next Five Years. This presentation discussed emerging technology challenges and divided them into two major categories: changes in computing and telecommunication networks and the resultant impacts on our nation's intelligence priorities. Other technical seminars included presentations on 4th Generation Wireless Cellular Protocols, Carrier Ethernet Services, Standards and Transport Networks, Multi-Planar Telecommunications Network Characterization, Near Vertical Direction Finding (NVDF) Sensors, and Elastic Scalability for Analytic Computing.

Additionally, the Company conducted several live demonstrations of its latest products, technologies, and integrated systems. Using Computer Network Operations to Influence Behavior, a hybrid seminar/demonstration that highlighted AST's offensive and defensive cyber technologies, was one of the most talked about demonstrations of the week. It provided insight into how information operations can be used to influence perceptions and actions through the use of advanced cyber technologies and an integrated system approach.

"The 2010 Spring Symposium was a great success. It was an honor to host a forum where we can present and discuss our full spectrum of technology solutions for intelligence, surveillance, and reconnaissance," noted William Van Vleet, President and Chief Executive Officer of AST. "This long-running and well- attended symposium further demonstrates that AST is a thought leader in technology innovation for a wide range of national security missions."

About Applied Signal Technology, Inc.
Applied Signal Technology, Inc. is a leading provider of advanced intelligence, surveillance and reconnaissance (ISR) products, systems, and services that enhance global security. For further information about Applied Signal Technology, visit our website at www.appsig.com.