The Coast Guard Court of Criminal Appeals does not have a standing bar to which you can apply for admission.  This Court relies upon Rule 9(c) of the Courts of Criminal Appeals Joint Rules of Appellate Procedure, which provides that "upon entering an appearance, counsel shall be deemed admitted pro hac vice, subject to filing a certificate setting forth required qualifications if directed by the Court."  Rule 12(a) provides that the filing of any pleading relative to a case constitutes notice of appearance of counsel signing the filing.  When you represent someone in a case before this Court, you simply file a notice of appearance in that case along with a certificate stating your qualifications, per Rule 9(a), in order to be deemed admitted pro hac vice.