My DS is a Falcon Scholar and recently received his appoint to the USAFA. You will need to reapply to all four nomination sources; they advise you to apply for all four (president, VP, senator and MOC). Once you complete the above and your kid remains competitive (basically doing all the stuff they expect you to do), they will make sure you are able to obtain a nomination from one of the sources. You also have to submit another application to USAFA but its condensed. Hope I answered your question.