For those curious, GetMyFBIFile.com will help get the forms for you to fill out.
If you don't trust any third-party site with your info, you can go directly to the NSA and FBI for the request.
Now the question is, If they didn't have a "file" on you before, will they NOW form a "file" on you when you ask for your "file"?
Oh, the conundrum.
Original Source: http://m.dailykos.com/story/2013/06/11/1215421/-Want-to-See-Your-NSA-or-FBI-File-Here-s-How