Andrew Karp is President of Sierra Information Services, Inc. a SAS Software consulting and training firm located in Northern California. His firm was the first in the Western USA to receive designation as a Quality Partner of SAS Institute, Inc. A 20-year SAS Software user, Andrew has presented numerous papers at SUGI, regional users group and local user group meetings in North America, as well as at user group meeting in Australia, New Zealand, the United Kingdom and the Netherlands. He is a SAS Certified Professional? for Version 8 of the SAS System. He holds undergraduate and graduate degrees from The George Washington University in Washington, DC and is an avid amateur photographer.