• For years, concrete walls and chain link fences have been all that stands between critical assets and terrorist attacks for years now. But not anymore. Ideal Utility Services US Steel ballistic barriers will protect electric grids, substations and other assets from almost every form of attack, including UL 752 level ballistic attacks, fire attacks, and vehicle ramming attacks. These barriers also give facilities and areas visual obstruction to deter terrorists from their wanted penetration spots.