Associations

Aircraft Owners & Pilots Association
American Iron and Steel Institute
Association of Public-Safety Communications
   Officials, Inc.
American Society for Cell Biology
American Society for Microbiology
National Electrical Contractors Association,
   Washington, DC Chapter
National Venture Capital Association
Society of Fire Protection Engineers
Washington Building Congress

Building Industries

Centennial Contractors Enterprises, Inc.
The Clark Construction Group, Inc.
The Electrical Alliance
James G. Davis Construction Corporation
Hensel Phelps Construction Co.
North America Traffic
Potomac Valley Brick and Supply Co.
Seawright Homes, LLC
VarcoMac Electrical Construction Co.

Hospitality

Doubletree Bethesda Hotel
  and Executive Conference Center
Southern Management

Tradeshows and Conventions

Aircraft Owners and Pilots Association
American Chemical Society
APCO International
CITEM (Center for International Trade Expositions
   and Missions—Philippines)
ISM—Exhibition and Convention Executive Forum
National Mining Association
National Venture Capital Association
Naylor/CMG—Worldwide Food Expo, InterBev,
   Southern Building Show and
   U.S. Export Showcase
Synthetic Organic Chemical Manufacturers
Association

Corporate and Industrial

Best Software, Inc./SAGE
Comcast SportsNet
Discovery Education
ExpoExchange
Freddie Mac Foundation
George Washington University
Microsoft Corporation
National Institute on Aging (NIH)
Parking Management Inc.