If a shooter can’t get into a classroom through a bulletproof door, and they can't shoot or break through the walls, then they can't harm our kids. Based on our testing, a typical bullet can penetrate as many as eight wall sections before the projectile is stopped. Students need a way to instantly shelter in place! Rhino Hide is a completely new category of product made from a two-part composite-reinforced liquid that can be poured into small holes at the top of any standard wall. The wall is filled, and the liquid chemically cures in a few hours to a hard consistency. The formulated composite in this new product, that is currently protected by a provisional patent, make the walls or structures it is filled with impervious to projectiles from small arms fire or projectiles from extreme weather such as hurricanes or tornadoes. Rhino Hide: *Allows students and teachers to shelter-in-place *Can be installed in existing walls and structures! *Takes hours to install, not weeks *Much lower cost than competitive classroom shelters *Serves to dampen sound from adjacent rooms