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NOTICE: The project that is the subject of this report was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. The members of the committee responsible for the report were chosen for their special competences and with regard for appropriate balance.
This study was supported by the National Geospatial-Intelligence Agency, Grant No.HM1582-04-1-2020. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of the organizations or agencies that provided support for the project.
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Cover: Upper left: Air Force personnel using a global positioning system handheld unit for mapping. Courtesy of the U.S. Air Force. Upper right: Courtesy of NASA. Lower left: Courtesy of Getty Images. Lower right: Army personnel flying an unmanned aerial vehicle. Courtesy of the U.S. Army.
Cover designed by Michele de la Menardiere
Copyright 2006 by the National Academy of Sciences. All rights reserved.
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