(a) The Secretary may terminate a direct traineeship at any time upon request of the trainee.

(b) After reasonable notice to the trainee and an opportunity for the presentation of the trainee's views and relevant evidence, the Secretary may terminate any direct traineeship prior to the date it would otherwise expire upon a determination that the trainee's performance is unsatisfactory, that the trainee is no longer attending the sponsoring institution, or that he or she is unfit or unable to carry out the purpose of the traineeship.

(c) The views and evidence of the trainee shall be presented in writing unless the Secretary determines that an oral presentation is desirable.