Engineering/Consulting Firms

- Booz Allen Hamilton, Mclean, Virginia, USA
- Burgess and Niple, Columbus, Ohio, USA
- CRS Sirrine, Houston, Texas, USA
- CTE Engineers, Chicago, Illinois, USA
- DMJM Harris, Los Angeles, California, USA
- Electrowatt, Sao Paulo, Brazil
- FAI, Inc., Mclean, Virginia, USA
- Frederick R Harris, Fairfax, Virginia, USA
- Gannett Fleming, Seattle, Washington, USA
- Interfleet, Philadelphia, Pennsylvania, USA
- Lea and Elliott, Arlington, Texas, USA
- LTK Engineering, Ambler, Pennsylvania, USA
- Parsons Brinckerhoff, Newark, New Jersey, USA
- Parsons Management Construction (PMC), Dulles, Virginia, USA
- Parsons Transportation Group (PTG), Washington, D.C., USA
- Price Waterhouse Coopers, Washington, D.C., USA
- Reynolds, Smith and Hill, Plantation, Florida, USA
- Robert L Banks and Associates, Washington, D.C., USA
- Vanasse Hangen Brustlin, Boston, Massachusetts, USA
- Washington Group International - WGI, Princeton, New Jersey, USA