- Advanced Power
- Aerospace Corporation
- Agency for International Development
- American Express Corporation
- Applebee’s Restaurants
- Baja Fresh Restaurants
- Bechtel Corporation
- Benchmark International
- CB&I, Inc.
- Coca-Cola, Inc.
- Dogfish Head Alehouses
- Environmental Quality Company
- F.I.T. Consulting
- GeoStructures, Inc.
- Hilton Hotels
- Internal Revenue Service
- Los Alamos National Laboratories
- Marriott International
- Peace Corps
- Project Hope
- Ritz-Carlton Hotels
- Starbucks Coffee Company
- Superior Court of the District of Columbia
- United Nations Development Programme
- US Food and Drug Administration
- Wendy’s International
- Westin Hotels and Resorts
- World Bank