To fill a vacancy in the Vice-Presidential quota or in the quota of a nominating authority in the congressional and U.S. Possessions categories, selections for appointment offers are made according to the following nomination methods.

(a) The principal numbered-alternate method. The nominating authority indicates his or her personal preference by designating a principal nominee and listing nine numbered alternate nominees in order of preference, and the appointment is offered to the first fully qualified nominee.

(b) The principal competitive-alternate method. The nominating authority designates his or her principal nominee and names up to nine other nominees who are evaluated by the Academy and ranked behind the principal nominee in order of merit. If the principal nominee is fully qualified, that individual is offered the appointment; otherwise, the fully qualified nominee ranked the highest by the Academy is offered the appointment.

(c) The competitive method. At the request of the nominating authority, the Academy evaluates the records of all the nominees and ranks them in order of merit. The fully qualified nominee ranked the highest by the Academy is offered the appointment.