Three Gemini Systems Added to Meet the Requirements of the 9/11 Commission Act of 2007

BILLERICA, Mass.–American Science and Engineering, Inc. (AS&E®) (NASDAQ: ASEI – News), a leading worldwide supplier of innovative X-ray detection solutions, announced today that the Transportation Security Administration (TSA) has added the Company’s Gemini™ 6040, Gemini 7555, and Gemini 100100 X-ray inspection systems to its Air Cargo Screening Qualified Technology List (ACSQTL). Inclusion on the ACSQTL allows certified air cargo facilities to purchase systems directly from AS&E to meet the requirements of the 9/11 Commission Act of 2007. The Act mandates 100% inspection of air cargo carried on passenger airplanes by August 2010.

AS&E’s Gemini systems offer certified air cargo screeners the combination of dual-energy transmission X-ray with AS&E’s proprietary Z Backscatter™ X-ray technologies for comprehensive threat detection of air cargo. AS&E will display its Gemini parcel inspection technology at the AirCargo 2010 Exhibition and Conference in Orlando, Florida, today through March 16, 2010.

“We are pleased that TSA has added AS&E’s Gemini systems to its ACS Qualified Technology List to inspect air cargo before being loaded onto passenger planes,” said Anthony Fabiano, AS&E’s President and CEO. “Our Gemini system’s multi-technology capability can detect both metallic and organic threats, providing security officials with a unique ability to detect explosives. Additionally, Z Backscatter technology produces photo-like images that are easy to interpret, facilitating the operator’s analysis time to efficiently move cleared cargo onto the planes. We look forward to assisting TSA and the certified air cargo facilities to meet the 100% screening mandate.”

Gemini™ Multi-technology Parcel X-ray Inspection Systems

Gemini is the lowest cost multi-technology inspection system on the market and the only system to combine AS&E’s Z Backscatter technology and dual-energy transmission. Z Backscatter technology provides enhanced detection of organic materials such as explosives (including sheet and liquid explosives), drugs, and plastic weapons which are easily missed by transmission-only systems in cluttered parcels. Its photo-like images are easy to interpret, potentially decreasing items flagged for secondary screening, and reducing operator fatigue. Dual-energy transmission provides outstanding image quality, and enables the quick detection of a wide variety of threats such as guns, knives, and wires for IEDs. In addition, dual-energy offers organic and metallic discrimination. Together, the Gemini systems’ two technologies provide the most information available about the contents of a parcel. Gemini systems are available in multiple tunnel sizes to inspect air cargo, large packages, break-bulk cargo, mail and other small parcels to meet your security requirements for air-cargo facilities, Customs checkpoints, high-threat facilities, building lobbies, and mailrooms.

About AS&E®

American Science and Engineering, Inc. (AS&E) is the leading worldwide supplier of innovative X-ray inspection systems. With over 50 years of experience in developing advanced X-ray security systems, the Company’s product line utilizes a combination of technologies, including patented Z Backscatter technology, Radioactive Threat Detection (RTD), high energy transmission and dual energy transmission X-ray. These technologies offer superior X-ray threat detection for plastic explosives, plastic and metal weapons, liquid explosives, dirty bombs and nuclear devices. AS&E’s complete range of products include cargo inspection systems for port and border security, baggage screening systems for facility and aviation security, and personnel and passenger screening systems. AS&E systems protect high-threat facilities and help combat terrorism and trade fraud, drug smuggling, weapon smuggling, and illegal immigration and people smuggling. AS&E customers include leading government agencies, border authorities, military bases, airports and corporations worldwide, including the U.S. Department of Homeland Security (DHS), U.S. Department of Defense (DoD), U.S. Customs and Border Protection (CBP), North Atlantic Treaty Organization (NATO), HM Revenue & Customs (U.K.), Hong Kong Customs, Saudi Arabia Customs, and Abu Dhabi Customs. For more information on AS&E products and technologies, please visit www.as-e.com.

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, delays or cancellations (in full or in part) 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; litigation seeking to restrict the use of intellectual property used by the Company; limitations under certain laws on the Company’s ability to protect its own intellectual property; potential product liability claims against the Company; 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; the potential insufficiency of Company resources, including human resources, capital, plant and equipment and management systems, to accommodate any future growth; technical problems and other delays that could impact new product development and the Company’s ability to adapt to changes in technology and customer requirements; competitive pressures; lengthy sales cycles both in United States government procurement and procurement abroad; 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. Readers are further advised to review the “Risk Factors” set forth in the Company’s Annual Report on Form 10-K, which further detail and supplement the factors described in this Safe Harbor Statement. Among other disclosures, the Risk Factors disclose risks pertaining to that portion of the Company’s business that is dependent on United States government contracting as well as international customers. As a contractor with the United States government, a significant number of the Company’s government contracts may be terminated at the government’s discretion.