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

NEW YORK, April 7, 2008 /PRNewswire-FirstCall/ -- Aftermarket Technology Corp. (NASDAQ:ATAC) will replace Mesa Air Group Inc. (NASDAQ:MESA) in the S&P SmallCap 600 after the close of trading on Wednesday, April 9, 2008. As of today's close of trading, Mesa Air Group had a market capitalization of approximately $33 million, ranking 600th in the index.

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

Aftermarket Technology Corp. provides outsourced engineering solutions and supply chain logistics services to the consumer electronics industries and vehicle aftermarket. Headquartered in Downers Grove, IL, the company will be added to the S&P SmallCap 600 GICS (Global Industry Classification Standard) Auto Parts & Equipment Sub-Industry index.

    Following is a summary of the change:

                    S&P SMALLCAP 600 INDEX - April 9, 2008

                COMPANY         GICS ECONOMIC SECTOR   GICS SUB-INDUSTRY
    ADDED     Aftermarket             Consumer        Auto Parts & Equipment
              Technology           Discretionary

    DELETED   Mesa Air Group        Industrials              Airlines

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.

About Standard & Poor's Index Services

Standard & Poor's Index Services, the world's leading index provider, maintains a wide variety of investable and benchmark indices to meet an array of investor needs. Its family of indices includes the S&P 500, an index with $1.32 trillion invested and $4.91 trillion benchmarked, and the S&P Global 1200, a composite index comprised of seven regional and country headline indices. For more information, please visit www.standardandpoors.com/indices.

About Standard & Poor's

Standard & Poor's, a division of The McGraw-Hill Companies (NYSE:MHP), is the world's foremost provider of financial market intelligence, including independent credit ratings, indices, risk evaluation, investment research and data. With approximately 8,500 employees, including wholly owned affiliates, located in 23 countries, Standard & Poor's is an essential part of the world's financial infrastructure and has played a leading role for more than 140 years in providing investors with the independent benchmarks they need to feel more confident about their investment and financial decisions. For more information, visit: www.standardandpoors.com.

About The McGraw-Hill Companies:

Founded in 1888, The McGraw-Hill Companies (NYSE:MHP) is a leading global information services provider meeting worldwide needs in the financial services, education and business information markets through leading brands such as Standard & Poor's, McGraw-Hill Education, BusinessWeek and J.D. Power and Associates. The Corporation has more than 280 offices in 40 countries. Sales in 2007 were $6.8 billion. Additional information is available at http://www.mcgraw-hill.com.

Source: Standard & Poor's

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