Recently, Surmet Corporation announced it is commercially producing its version of “transparent" aluminum called ALON®. Technically known as aluminum oxynitride, Star Trek fans may be more familiar with the term “transparent aluminum” first proposed by Senior Engineer Scotty in the 1986 movie, Star Trek IV: The Voyage Home. Read more about it here: http://www.tssbulletproof.com/optically-clear-aluminum-provides-bulletproof-protection/