HAWTHORNE, Calif. - Rapiscan Systems, a global leading supplier of security inspection systems, announced today that it has been awarded a follow on order for approximately $15 million for its Rapiscan 620DV (Dual-View) Advanced Technology X-Ray scanning systems from the Transportation Security Administration (TSA). This order brings the total amount awarded to date to approximately $32 million since receiving an Indefinite Delivery Indefinite Quantity Order from the TSA in August 2007. The TSA has deployed the Rapiscan 620DV at various locations including the Los Angeles International Airport. The deployment at Los Angeles International Airport represents the largest installation of AT systems at any single site in the United States. The Rapiscan 620DV allows security officers to obtain multiple views of a carry-on bag. Additionally, the systems have the ability to be upgraded in the future as new capabilities are developed. Rapiscan Systems President, Ajay Mehra, stated, "TSA's adoption of the 620DV technology demonstrates Rapiscan Systems‚ continuing leadership in delivering efficient, effective checkpoint screening technologies that the aviation security market demands today. The system's flexibility ensures that it will remain a key contributor to aviation security for years to come." About Rapiscan Systems Rapiscan Systems, a division of OSI Systems, Inc. is a leading supplier of high quality security inspection solutions utilizing X-ray and gamma-ray imaging, and advanced threatentification techniques such as neutron and diffraction analysis. The company's products are sold into four market segments: Baggage and Parcel Inspection, Cargo and Vehicle Inspection, Hold Baggage Screening, and People Screening. The company has an installed base globally of more than 50,000 security and inspection systems. The Rapiscan Systems product line is manufactured at four locations and supported by a global support service network. For more information on Rapiscan Systems, please visit www.rapiscansystems.com. For Additional Information, Contact: Amy Talley, Jefferson Communications Phone: (703) 395-5143 Email: atalley@jeffersoncomm.com This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such statements include information regarding the company‚s expectations, goals or intentions about the future, including, the Company‚s contract with the Transportation Security Administration for Advanced Technology X-Ray systems. The actual results may differ materially from those described in or implied by any forward-looking statement. In particular, the timing, and delivery of the Advanced Technology X-Ray systems may not ultimately remain in line with the company's current expectations. Other important factors are set forth in the Securities and Exchange Commission filings OSI Systems, Inc. All forward-looking statements speak only as of the date made, and the company undertakes no obligation  to upd ate these forward-looking statements.