If you are appealing a federal crime that you have been convicted of, the appeal might take place a bit further from where you call home than it would if you were charged with a lesser crime. This is because these appeals take place in very special courts that are spread out around the United States. There are some spaces that might be far away from one of these courts.
Originally these nine courts, spread out across the United States were built to make it easier for the Supreme Court to get through all of the cases that were being sent to them. Federal appeals all go through these courts before they can be sent to the Supreme Court. Both defendants and prosecutors can file for an appeal if they are unhappy with the results of a case.