Per Enclosure (6) Life Cycle Sustainment (page 53) of SECNAV Instruction 5000.2F “Defense Acquisition System and Joint Capabilities Integration and Development System” Implementation at https://www.secnav.navy.mil/doni/Directives/05000%20General%20Management%20Security%20and%20Safety%20Services/05-00%20General%20Admin%20and%20Management%20Support/5000.2F.pdf, and specifically paragraph 3. Life Cycle Sustainment Plan which specifies that “for DON ACAT programs, the Program Manager shall develop and maintain a LCSP …The Program Manager shall use the LCSP to plan, resource, and execute the life-cycle sustainment of the system. LCSPs for ACAT I and II programs shall be coordinated with DASN (ELM)… The MDA, or designee, shall be the approval authority for the LCSP.” While not a template per se, recommend using the DoD Life Cycle Sustainment Plan (LCSP) Outline, available at https://www.dau.edu/tools/t/Life-Cycle-Sustainment-Plan-(LCSP)-Outline, to document your product support strategy.  There is no reference to or requirement for a Users Logistics Support Summary (ULSS) in this SECNAV instruction.