Please complete the following form and click the submit button only once. If you feel you have made an error after the form has been submitted, please Contact our office. Membership is open to persons who served with or supported USAF Air Commando/Special Operation Units. To include Guard and Reserve Special Operators. Other interested parties may join as non-voting associate members with the approval of the Board of Directors. Widows of persons eligible for ACA membership are invited to join our Crystal Flight.