of title 10, United States Code. Any repayment of a loan under this paragraph may require a minimum service agreement, as determined by the Secretary. (8) Element of the Department defined In this subsection, the term element of the Department means an element of the Department specified in section 111(b) of title 10, United States Code. (f) Career development (1) In general The Secretary of Defense shall ensure that participants in the fellows program— (A) receive career development opportunities and support appropriate for the commencement of a career track within the Department leading toward a future position of senior leadership within the Department, including ongoing mentorship support through appropriate personnel from entities within the Department