American Science and Engineering, Inc. Offers Insight into Backscatter Technologies Available for Liquid Explosive Detection For Counterterrorism.

BILLERICA, Mass. -- American Science and Engineering, Inc. (NASDAQ: ASEI) (AS&E(R)), a leader in X-ray detection technology, is available for interviews to discuss the technologies available for better detection of hidden threats, including liquid and other improvised explosives, when boarding an airplane. AS&E's patented Z(R) Backscatter(TM) X-ray detection systems have a higher probability of detecting liquid and other types of explosives than other X-ray systems on the market.

AS&E's new parcel inspection system, Gemini(TM), is the first conventional parcel inspection system to combine Z(R) Backscatter(TM) and dual-energy X-ray technologies allowing operators to obtain the most information about the contents of a parcel -- dramatically increasing the likelihood of finding a variety of threats including liquid or other explosives, guns, narcotics, and other IEDs. Gemini's unique capability to detect both metallic and non-metallic threats -- even in cluttered environments -- makes it an invaluable inspection tool for security officials.

AS&E's personnel screening system, SmartCheck(TM), is the industry's most comprehensive, non-intrusive, personnel screening system for detecting explosives, weapons, and contraband while ensuring personal privacy. Unlike metal detectors, which only detect metallic objects, or trace portals, which only detect explosives if residue is present on a person, SmartCheck's Z Backscatter technology makes it possible to detect all types of threats on a person's body, both metallic and non-metallic objects, including plastic and metal weapons (e.g. guns, knives, box cutters, composite weapons), recording devices, explosives, drugs, and other contraband. SmartCheck gives the operator an easy-to-read display of where the threat or contraband is hidden, thus eliminating the need for intrusive and time-consuming pat-downs.

About AS&E(R)

American Science and Engineering, Inc. (AS&E) is the leading worldwide supplier of innovative X-ray inspection and screening systems. With more than 45 years of experience in developing advanced X-ray security systems, the Company's product line utilizes a variety of technologies, including patented Z(R) Backscatter(TM), Shaped Energy(TM) and Radioactive Threat Detection (RTD). These technologies offer superior detection of threats including plastic explosives, plastic weapons, illegal drugs, other contraband, dirty bombs and nuclear devices. AS&E offers a complete range of X-ray inspection products including Z(R) Backscatter screening systems, CargoSearch(TM), and ParcelSearch(TM) inspection systems, used for critical detection and security applications to combat terrorism, drug and weapon smuggling, trade fraud, and illegal immigration. AS&E customers include leading governmental agencies, border authorities, military bases, airports and corporations worldwide, including the U.S. Department of Homeland Security, U.S. Department of Defense, U.S. Customs and Border Protection, Royal Thai Police, HM Customs & Excise (U.K.) and Hong Kong Customs. For more information on AS&E products and technologies, please visit www.as-e.com.

To interview with AS&E executives, call Laura Berman at American Science and Engineering, Inc. at 978-262-8713.

Safe Harbor Statement

The foregoing press release contains statements concerning AS&E's financial performance, markets and business operations that may be considered "forward-looking" under applicable securities laws. AS&E wishes to caution readers of this press release that actual results might differ materially from those projected in any forward-looking statements. Factors which might cause actual results to differ materially from those projected in the forward-looking statements contained herein include the following: significant reductions or delays in procurements of the Company's systems by the United States and other governments; disruption in the supply of any source component incorporated into AS&E's products and other factors which may cause delays in production and delivery schedules; litigation seeking to restrict the use of intellectual property used by the Company; potential product liability claims against the Company; failure of any of our products to meet performance requirements or to continue to operate reliably because of unexpected design flaws or manufacturing defects, global political trends and events which affect public perception of the threat presented by drugs, explosives and other contraband; global economic developments and the ability of governments and private organizations to fund purchases of the Company's products to address such threats; and the potential insufficiency of Company resources, including human resources, capital, plant and equipment and management systems, to accommodate any future growth, and future delays in federal funding. These and certain other factors which might cause actual results to differ materially from those projected are detailed from time to time in AS&E's periodic reports and registration statements filed with the Securities and Exchange Commission, which important factors are incorporated herein by reference. AS&E undertakes no obligation to update forward looking statements to reflect changed assumptions, the occurrence of unanticipated events, or changes in future operating results, financial condition or business over time.