(1) Under regulations prescribed by the Secretary of the Navy, an officer of the naval service who
(A) is entitled to basic pay;
(B) is not above the pay grade O6;
(C) has completed his initial obligated active service as an officer;
(D) has, as a commissioned officer, successfully completed training for duty in connection with the supervision, operation, and maintenance of naval nuclear propulsion plants; and
(E) has the current technical qualifications for duty in connection with the supervision, operation, and maintenance of naval nuclear propulsion plants;
may, in addition to all other compensation to which he is entitled, be paid an annual bonus in an amount not to exceed $22,000 for each nuclear service year.
(3) The amount of the annual bonus to which an officer would otherwise be entitled for a nuclear service year in accordance with this subsection shall be reduced on a pro rata basis for each day of that nuclear service year on which he
(A) was not on active duty;
(B) was not technically qualified for duty in connection with the supervision, operation, and maintenance of naval nuclear propulsion plants;
(C) was performing obligated service as the result of an active-service agreement executed under section
312 of this title; or
(D) was entitled to receive aviation career incentive pay in accordance with section
301a while serving in a billet other than a billet that required the officer
(i) be technically qualified for duty in connection with the supervision, operation, and maintenance of naval nuclear propulsion plants; and
(ii) be qualified for the performance of operational flying duties.