Air Force Produces Light, Thin Transparent Armor
The Air Force Research Laboratory is manufacturing transparent ceramic armor for both air and ground vehicles. ALON is a transparent ceramic material composed of aluminum, oxygen, and nitrogen. It begins as a powder that is formed into unique shapes and made transparent through the application of high temperature and pressure.
Transparent armor is currently used on U.S. Army Blackhawk and Chinook helicopters; it is also of interest to NASA for Cupola scratch pane windows on the International Space Station.