CHARLES N. KIMBALL, Chairman JAMES C. FLETCHER RACHEL MCCULLOCH

The Technology Assessment Board approves the release of this report. The views expressed in this report are not necessarily those of the Board, OTA Advisory Council, or of individual members thereof.

Photo on the cover:

Haj Terminal, King Abdul Aziz International Airport, Saudi Arabia. The
terminal was designed by a U.S. firm to accommodate the more than 2 million
Muslim pilgrims who annually travel to Mecca, located near Jeddah.
(Photo credit: ARAMCO World Magazine)