Secretary of Defense and Service Secretaries to vary personnel end strengths (a) Authority for Secretary of Defense variances Section 115(f)(2) of title 10, United States Code, is amended by striking increase and inserting vary . (b) Authority for Service Secretary variances Section 115(g) of title 10, United States Code, is amended— (1) in paragraph (1)— (A) in subparagraph (A), by striking and at the end