Subject: Ionscan Sentinel II For Immediate Release: 3/8/2007 For any additional information contact your local service office There has been a change in policy regarding the start and end dates of Daylight Savings Time (DST) in the US. The impact for Sentinel II system is that the operating system will not change the system clock on the correct date. We have devised a manual procedure for our Sentinel II users to follow. In August 2005, the United States Congress passed the Energy Policy Act, which changes both the start and end dates of Daylight Savings Time (DST). When this law goes into effect this year, DST will start three weeks earlier (2:00 A.M. on the second Sunday in March) and will end one week later (2:00 A.M. on the first Sunday in November) than what has traditionally occurred. Changes in Daylight Savings Time Previous DST Start First Sunday of April Would have been April 1, 2007 New law DST Start Second Sunday of March Will now be March 11, 2007 Previous DST End Last Sunday of October Would have been October 28, 2007 New law DST End First Sunday of November Will now be November 4, 2007 >

Page 2 of 5 Sentinel II systems with other systems in order to mitigate the impact of DST 2007 on their organizations. The manual DST changeover procedure is described below. 1. Turn the system ON. 2. Allow the system to fully load the software and other miscellaneous drivers. This will take roughly five minutes. 3. Shutdown the SC software by choosing Exit on the main screen, and then press Yes when asked Are you sureӔ. This will close the software and display the desktop. 4. In the lower right corner of the desktop screen, point to the time, and the current date will be displayed. 5. Right...

Page 3 of 5 7. Uncheck the box Automatically adjust clock for daylight savings changesӔ. >

Page 4 of 5 8. Select the Date & Time tab and set the time ahead one hour. 9. Click Apply. Click OK. 10. Your clock is now properly set to Daylight Savings Time. Unfortunately, Windows will continue to display Standard Time. 11. When November 4 comes, follow steps 1-5. >

Page 5 of 5 12. Select the Date & Time tab and set the time back one hour. 13. Click Apply. Click OK. 14. Your clock is now properly set to Standard Time. >