DCA and the corps that make it up, are all private organizations, not unlike the Boy Scouts of America, whom the Supreme Court said has the right to choose its members based on its own criteria. Cadets2 can choose to restrict the age to 22, although they said they might relax it to 23/24 which probably means that we might see some of those recent age-outs/locals/ringers/screamers/add-your-adjective-right-here as they see fit to complete their show.