The Decade of Discovery in Astronomy and Astrophysicshttp://www.nap.edu/catalog/1634.html EXISTING PROGRAMS 62original typesetting files. Page breaks are true to the original; line lengths, word breaks, heading styles, and other typesetting-specific formatting, however, cannot beAbout this PDF file: This new digital representation of the original work has been recomposed from XML files created from the original paper book, not from theretained, and some typographic errors may have been accidentally inserted. Please use the print version of this publication as the authoritative version for attribution. The facilities of the National Solar Observatory (NSO) are critically important to the solar community, both because few university astronomy departments maintain solar facilities and because NSO telescopes are among the best in the world. Yet budgetary pressures, accumulated over many years, have weakened the NSO. For example, the observatory has been unable to purchase state-of-the-art infrared or visible-light detector arrays to support solar adaptive- optics experiments at an appropriate pace. This situation should be corrected and is one reason that this committees highest priority for ground-based astronomy is renewed investment in the infrastructure.