The Chairman of the Joint Chiefs of Staff may grant exceptions to the requirement under paragraph (1). Such an exception may be granted only on a case-by-case basis under exceptional circumstances, as determined by the Chairman. An officer
selected to receive such an exception shall have knowledge of joint matters and other aspects of the Phase I curriculum that, to the satisfaction of the Chairman, qualifies the officer
to meet the minimum requirements established for entry into Phase II instruction without first completing Phase I instruction. The number of officers
selected to attend an offering of the principal course of instruction at the Joint Forces Staff College or a senior level service school
designated by the Secretary of Defense as a joint professional military education institution who have not completed Phase I instruction should comprise no more than 10 percent of the total number of officers selected.