The travel and other personal expenses of candidates incurred in connection with the written and oral examinations will not be borne by the Government, except that the Department may issue round-trip invitational travel orders to bring candidates to Washington at Government expense when it is determined that it is necessary in ascertaining a candidate's qualifications and adaptability for appointment. (22 U.S.C. 1221 et seq.) [37 FR 19356, Sept. 20, 1972]