George Omura is a licensed architect and Autodesk Authorized Author, with more than 30 years of experience in the field and 20 years of experience with AutoCAD. As a CAD specialist, he has worked on projects ranging from resort hotels to metropolitan transit systems to the San Francisco Library project. George is the all-time bestselling CAD author. Brian Benton is a Senior Engineering Design Technician, CAD Service Provider, trainer, technical writer and blogger. He has over 20 years of experience in various design fields (Mechanical, Structural, Civil, Survey, Marine, Environmental), has a degree in Design Drafting and is well versed in many design software packages (CAD, GIS, Graphics). He has been Cadalyst Magazine's Tip Patroller and writer, an AUGI HotNews Production Manager, is a contributing author, and an AutoCAD training video author as well as a member of the Autodesk Expert Elite Program.