There are many different resources -- official and unofficial -- that you can leverage to make your move to or from the Washington, DC area easier.
Start here to find the contact information for your base's relocation office.
Then check out the discussions from your future neighbors about what worked for them when they were in your shoes.
Important Contacts
(703) 696-3510
(202) 685-0229
(703) 614-7200
(202) 284-3060