Bullet proof barriers

A method of protecting an interior space of a building from a ballistic projectile using a flexible ballistic barrier, said method comprising the steps of:

• providing the ballistic barrier comprised of a plurality of sheets each sheet comprising a lightweight anti-ballistic woven material distributed uniformly throughout said sheet, said plurality of sheets being laminated together into a flexible laminate, wherein said ballistic barrier is configured to stow into a compact retracted position when retracted and extend into an extended barrier position when deployed;
• installing said ballistic barrier fixedly in the building by permanently mounting said mounting structure to a window frame, wall, ceiling, or doorframe for fixed installation;
• after said installing, retracting the installed ballistic barrier into the retracted position exposing at least a portion of said interior space;
• and
• deploying the installed ballistic barrier into the deployed position to protect the at least a portion of the interior space from the ballistic projectile.

A method of protecting an interior space of a building from a bullet fired from a gun using a ballistic barrier arranged as a curtain, said method comprising the steps of:

• providing the window curtain including the ballistic barrier comprised of a plurality of sheets, each sheet having lightweight anti-ballistic material distributed uniformly throughout said sheet, said plurality of sheets being layered together into a flexible layer using an adhesive and/or by sewing the sheets together and/or by welding the sheets together, said laminate also including an outer layer different than the plurality of sheets, wherein said curtain is configured to stow into a retracted position and deploy into an extended barrier position and wherein said window curtain;
• installing said ballistic barrier in conjunction with the building by mounting said curtain using a mounting structure fixedly connected to a window frame, a wall, a ceiling, and/or another structure of the building;
• retracting the installed ballistic barrier by closing said curtain horizontally to expose at least a portion of said window;
• and
• deploying the installed ballistic barrier into a deployed position by fully or partially horizontally closing said curtain, said ballistic barrier covering a substantial portion of the window when deployed, wherein, when in said deployed position, said ballistic barrier is configured to flex and/or move to absorb kinetic energy from the bullet to prevent said bullet from entering said interior space.