DC Federal: The United States government has a presence in Washington through numerous facilities--Washington, District of Columbia, USA

The United State's government has an extensive presence in Washington

National Federal: Washington is the seat of the United States Federal Government; major top-level Web sites related to the United States government include the White House, Supreme Court, Federal Courts, Senate, and House
Shadow Rep: Shadow DC representative to the US House of Representatives; provides services to constituents but cannot vote; District of Columbia residents do not have voting representation in either the US House of Representatives or the US Senate
US Dist Ct: United States District Court for the District of Columbia
US Bankruptcy Ct: US Bankruptcy Court for the District of Columbia
US Ct of Appeals: US Court of Appeals for the District of Columbia Circuit
FBI DC: Washington Division Federal Bureau of Investigation; serves DC and parts of Virginia
Army Dist: US Army Military District of Washington; major installations include Fort Lesley J. McNair in Washington, Fort Myer (VA), Fort Belvoir (VA), Fort A.P. Hill (VA), Fort Hamilton (NY), and Fort Meade (MD)
Naval Dist: Naval District Washington; United States Navy operations in DC, headquartered on the Historic Washington Navy Yard
Andrews AFB: Andrews Air Force Base, Maryland
Bolling AFB: Bolling Air Force Base, DC
Langley AFB: Langley Air Force Base, Virginia; Air Combat Command and 1st Fighter Wing