(1) Subject to paragraph (2), the Secretary of Defense may waive subsection (a)
(A) in the case of an officer whose immediately previous assignment was in a joint duty assignment and who is thoroughly familiar with joint matters;
(B) when necessary for the good of the service;
(C) in the case of an officer whose proposed selection for promotion is based primarily upon scientific and technical qualifications for which joint requirements do not exist (as determined under regulations prescribed under section
619 (e)(4)1 of this title); and
(D) in the case of a medical officer, dental officer, veterinary officer, medical service officer, nurse, biomedical science officer, or chaplain.
