American Airlines

Arup

Bechtel

Bristol-Myers Squibb Company

Carter Burgess

City of New York

Dept. of Environmental Protection
Department of Investigation
Department of Law
Department of Sanitation
Department of Transportation
Housing Authority
Human Resources Administration
Landmark Preservation Commission
Museum of New York City
Office of Admin. Trials & Hearings
Office of Management and Budget

Cobb County Dept. of Transportation

Commonwealth of Pennsylvania

Continental Airlines Group

DMJM+HARRIS

Dell Computer Corporation

Hartsfield Atlanta International Airport

Louis Berger Group, Inc.

Los Alamos National Laboratory

Metropolitan Atlanta Rapid Transit Auth.

Metropolitan Transportation Auth.

Long Island Rail Road
MTA Headquarters
New York City Transit

Metropolitan Washington Airports Auth.

Montgomery Watson Harza

Nassau County

New Jersey Dept. of Transportation

New York State Dormitory Authority

New York State Office of Mental Health

Permanent Mission of Ethiopia to the UN

Port Authority of NY & NJ

JFK International Airport
LaGuardia Airport
Newark International Airport
Port Authority Police

Parsons Transportation Group

Raytheon Engineers & Constructors

Raleigh-Durham Airport Authority

Spear Technologies

Tischman Construction Corp.

Ulster County

URS/O’Brien Kreitzberg

Washington Infrastructure Services