Standard & Poor's Announces Change to U.S. Index

NEW YORK, June 4  /PRNewswire-FirstCall/ -- SI International, Inc. (NASD: SINT) will replace Delta and Pine Land Company (NYSE:DLP) in the S&P SmallCap 600 index after the close of trading on Tuesday, June 5, 2007.  Delta and Pine Land, which was removed from the index after the close of trading this evening, was acquired by S&P 500 constituent Monsanto Co. (NYSE:MON) before the opening of trading today.

Standard & Poor's will monitor this transaction, and post any relevant updates on its website: http://www.standardandpoors.com/.

SI International provides information services, technology, and network solutions primarily to the federal government. Headquartered in Reston, VA, the company will be added to the S&P SmallCap 600 GICS (Global Industry Classification Standard) IT Consulting & Other Services Sub-Industry index.

  Following is a summary of the change:


                  S&P SMALLCAP 600 INDEX - June 4, 2007
           COMPANY              GICS ECONOMIC SECTOR  GICS SUB-INDUSTRY
  DELETED  Delta and Pine Land  Consumer Staples      Agricultural Products


                  S&P SMALLCAP 600 INDEX - June 5, 2007
           COMPANY           GICS ECONOMIC SECTOR    GICS SUB-INDUSTRY
  ADDED    SI International  Information Technology  IT Consulting & Other
                                                      Services




Additions to and deletions from an S&P equity index do not in any way reflect an opinion on the investment merits of the companies concerned.

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DATASOURCE: Standard & Poor's



CONTACT:  David M. Blitzer, Ph.D.

Managing Director & Chairman of the Index Committee

Standard & Poor's

[phone]



Web site:  http://www.standardandpoors.com/

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