from time to time surveys and other reviews of the matters covered by the training provided pursuant to subsection (a) in order to identify and incorporate into such training the most current practicable best practices on such matters. (d) Uniformity The Secretary of Defense shall ensure that the training provided pursuant to subsection (a) is, to the extent practicable, uniform across the Armed Forces. 102. Training for Sexual Assault Initial Disposition Authorities on exercise of disposition authority for sexual assault and collateral offenses (a) In general The training for Sexual Assault Initial Disposition Authorities (SAIDAs) on the exercise of disposition authority under chapter 47, United States Code (the Uniform Code of Military Justice), with respect to cases for which disposition authority is withheld to such Authorities by the April 20, 2012, memorandum of the Secretary of Defense, or any successor memorandum, shall include comprehensive training on the exercise by such Authorities of such authority with respect to such cases in order to enhance the capabilities of such Authorities in the exercise of such authority and thereby promote confidence and trust in the military justice process with respect to such cases. (b) Memorandum of Secretary of Defense The April 20, 2012, memorandum of the Secretary of Defense referred to in subsection (a) is the memorandum of the Secretary of Defense entitled Withholding Initial Disposition Authority Under the Uniform Code of Military Justice in Certain Sexual Assault Cases and dated April 20, 2012. 103. Three-year extension of Defense Advisory Committee on Investigation, Prosecution, and Defense of Sexual Assault in the Armed Forces (a) Extension Subsection (f)(1) of section 546 of the Carl Levin and Howard P. Buck McKeon National Defense Authorization Act for Fiscal Year 2015 ( Public Law 113–291