Hat Rockwell Collins Rolls-Royce North America Salesforce.com Siemens Sprint Nextel Symantec Tata Communications Terremark Time Warner Cable Unisys Visa Inc. Verizon VMware See also MAE-East References Further reading Category:Economy of Virginia Category:High-technology business districts in the United States Category:Northern Virginia Category:Washington Dulles International Airport Category:Edge cities in the Baltimore-Washington metropolitan area