American Science and Engineering, Inc., together with its subsidiaries, develops, manufactures, markets, and sells X-ray inspection and detection products for homeland security, force protection, and public safety. It offers cargo inspection systems such as non-intrusive inspection systems primarily used for screening of trucks, cars, cargo containers, pallets, and air cargo at border crossings, seaports, military bases, airports, and transportation hubs. The company’s cargo inspection systems include OmniView gantry system, a cargo and vehicle inspection system; Z Portal system, a drive-through inspection system for scanning cargo and vehicles; Sentry Portal system, a drive through transmission X-ray inspection system to screen cargo containers; CarView system, a relocatable inspection system for screening occupied cars and small vehicles; and ASE Connect, a networking solution. It also provides mobile cargo inspection systems such as Z Backscatter Van, a mobile X-ray screening system; and contract services for development of custom products primarily for agencies of the U.S. government. In addition, the company offers parcel and personnel screening inspection systems including the Gemini system, SmartCheck system, and MINI Z System. The company was incorporated in 1958 and is based in Billerica, Massachusetts with an additional operation center in Biddulph, United Kingdom. As of September 9, 2016, American Science and Engineering, Inc. operates as a subsidiary of OSI Systems, Inc.