US Patent 7926406 Methods and apparatus for providing ballistic protection

Methods and apparatus for providing ballistic protection and stopping high-velocity rounds or explosives and for constructing protective structures. The apparatus includes a building block, one or more ballistic panels configured to fit within the building block, each ballistic panel includes a three-dimensional core that acts as a truss for the ballistic panel, and a filler. The filler fills in spaces defined by each three-dimensional core and any empty spaces in the building block. The one or more ballistic panels and the filler are inserted into the building block. The building block is shaped to interlock with other building blocks.