Gundlach and Foch profile the design projects for more than 90 unmanned aircraft covering nearly four decades of development,--from 1975 to 2012--in the Naval Research Laboratory Vehicle Research Section. Their perspectives are primarily engineering and aircraft design, but they have tried to make the accounts accessible to non-technical aviation enthusiasts as well. The vehicles were designed to fly in the atmospheres of Earth, Mars, and Saturn's moon Titan, and range over a variety of missions, levels of autonomy, configurations, propulsion systems structural materials, and other technologies. Annotation ©2014 Ringgold, Inc., Portland, OR (protoview.com)