(1) The appropriate Secretary may, on request of an employee of a nonappropriated fund instrumentality of the Department of Defense or the Coast Guard described in section
2105 (c), grant such employee compensatory time off from duty instead of overtime pay for overtime work.
(2) For purposes of this subsection, the term appropriate Secretary means
(A) with respect to an employee of a nonappropriated fund instrumentality of the Department of Defense, the Secretary of Defense; and
(B) with respect to an employee of a nonappropriated fund instrumentality of the Coast Guard, the Secretary of the Executive department in which it is operating.