NASA/George C. Marshall Space Flight Center, Procurement Office, Marshall Space Flight Center, AL 35812

A -- NATIONAL SPACE SCIENCE AND TECHNOLOGY CENTER (NSSTC) SOL 8-1-0-SD-C7058 POC Carlos M. Smiley, Contracting Officer, Phone (256) 544-0355, Fax (256) 544-8656, Email carlos.smiley@msfc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=D&pin=62#8-1-0-SD- C7058. E-MAIL: Carlos M. Smiley, carlos.smiley@msfc.nasa.gov. This is a modification to the sources sought synopsis entitled National Space Science and Technology Center which was posted on June 7, 2000. You are notified that the following changes are made: The date for the industry briefing that was originally scheduled for July 19, 2000, has been been rescheduled for July 20, 2000. All other requirements of the base synopsis and modification 01 remain unchanged. The due date for receipt of capability/qualification statements is not extended. Documents related to this procurement are available over the Internet and are in Microsoft Office Suite (Word 6.0, Excel 5.0, or PowerPoint 4.0) format and will reside on a World Wide Web (WWW) server, which may be accessed using a WWW browser application. The Internet site, or URL, for the NASA/MSFC Business Opportunities home page is http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=CL&pin=62 Offerors are responsible for monitoring this site for the release of the solicitation and any amendments. Potential offerors are responsible for downloading their own copy of the solicitation and amendments (if any). Posted 06/13/00 (D-SN464034). (0165)

Loren Data Corp. http://www.ld.com (SYN# 0006 20000615\A-0006.SOL)