​A Major Defense Acquisition Program for which the Service Acquisition Executive (SAE) is the Milestone Decision Authority by operation of Section 2430 of Title 10, U.S.C., will be designated within the DoD as ACAT IB programs. The SAE of the Military Department that is managing an MDAP reaching Milestone A after October 1, 2016 will be the MDA for the MDAP and designated ACAT IB to differentiate these programs from ACAT ID programs or ACAT IC programs.