The decision was made on SSC upgrade features to prioritize over-the-horizon surface and ASW capabilities with a greater degree of self-defense, not anti-aircraft or missile defense, which will be left to large surface combatants. Although a 3D radar is included in the designs, a VLS was absent from the hulls, contrary to what naval experts suggested and industry submissions contained. Adding a vertical launch system was evaluated, but was determined to be too heavy and large and requiring long and costly changes; modular aspects of the ships may allow for the addition of the smaller Mk 56 VLS for the Evolved Sea Sparrow Missile. When emphasized on ASW, the ships will combine the fixed multi-function towed sonar array with the mission package's variable depth sonar to have "the most effective ASW sensor platform in the Navy." For SUW, the key addition is the inclusion of an over-the-horizon anti-ship missile; the Navy is looking at potential systems that could compete with the Harpoon Block II. Aside from lethality changes, the service also intends to have a common combat management system for both variants.