 Other changes included installation of an unspecified over-the-horizon missile, Mark 38 25 mm guns, a torpedo countermeasures system, a multifunction towed array system, installation of a SeaRAM launcher (on the "Freedom"-class), an upgraded countermeasures decoy system, an upgraded electronic warfare system, armor added to vital spaces, and improved signature management.The SSC will focus on Surface Warfare (SUW) and Anti-submarine Warfare (ASW) with these additions, as well as retaining all other features of their mission packages; the SSC is not required to perform MCM, which will continue to be handled by the LCS.The vessels will retain a degree of modularity to concentrate on one mission set and will still have mission bays, although they may be reduced.