1 Exhibit 10(i)(2) [DEPARTMENT OF THE NAVY LETTERHEAD] IN REPLY REFER TO 5870 Ser OOCCIP/1098 September 24, 1993 Ms. Karen Lausten U.S. Alcohol Testing of America, Inc. 10410 Trademark Street Rancho Cucamonga, California 91730 Re: Flow Immunosensor License Dear Ms. Lausten: The Amended Sublicense Agreement dated September 23, 1993 between U.S. Alcohol Testing of America, Inc. and U.S. Drug Testing, Inc. has been reviewed and is approved on behalf of the Department of the Navy. Sincerely, /s/ William C. Garvert William C. Garvert Deputy Counsel (Intellectual Property) E-10