From FEInfobase

Earth Defence Force

The EDF (Earth Defence Force) is the fleet which has taken permanent residence within and around the Sol system since the Borg War. The EDF is made up of vessels from several races, Klingon, Ferengi, Romulan, Dominion and Federation to name but a few.

The security of the Sol system is the responsibility of Admiral Tom Paris of Voyager fame; however he does not have direct control over EDF its self. The EDF is under the command of Admiral Dan Taylor, one of the only surviving Admirals from before the Borg War.

Admirals Paris and Taylor work closely together to ensure that the sol system stays secure; there is a clear division of labour between the two admirals. Tom is responsible for security both in orbit and on each planet in the Sol system and Dan is responsible for the space ways within the Sol system and the surrounding systems.