The report presents status and progress for preliminary design concepts and thermal analysis for crystalline and salt host media. The report concludes that thermal management of defense waste, including the relatively small subset of high thermal output waste packages, is readily achievable.  Engineering feasibility, and design concepts presented are based upon established and existing elements and/or designs. The multipack configuration options for the crystalline host media pose the greatest engineering challenges as these design involve large, heavy waste packages that pose specific challenges with respect to handling and emplacement. Defense-related Spent Nuclear Fuel (DSNF) presents issues for post-closure criticality control, and a key recommendation relates to the need for special packaging design that includes neutron absorbing material for the DSNF. The report finds that the preliminary design options discussed are tenable for operational and post-closure safety, owing to the fact that these concepts have been derived from other published and well-studied repository designs.