no bullet penetrated through. Spider Silk Spider silk has some amazing natural properties and is one of nature’s strongest materials. Spider’s dragline silk has a tensile strength (force by which it can be stretched without breaking) similar to alloy steel, or about half as strong as Kevlar. Weight for weight it is five times stronger than steel. One apparent difference between the other armor materials is that the silk can be stretched up to 5 times its relaxed length without breaking. Darwin's bark spider produces a silk that is more than 10 times tougher than Kevlar and is the toughest biological material ever studied. Spider’s silk elasticity and strength allow for unique applications compared to the aramid fibers, for example it could be used as a protective body armor that would allow for coverage of the entire head due to its flexibility. It has the potential to be used in numerous military, construction, and medical applications. Commercial and cargo planes Following the bombing of the Pan Am Flight 103 in 1988 the Transportation Security Laboratories have been developing ways to reduce the damage to an airplane by placing a hardened film around the cargo bay and overhead compartments. They have also changed the shape of the cargo bay to provide more security and to reduce the force of any explosion. To improve the circumstances in a case where an aircraft turbine engine fails, the Federal Aviation Administration (FAA) is working to design specific armor to protect the vital parts of the plane to assure safe flying until landing is accomplished. This armored barrier would prevent fragments from engine failure from damaging other sections of the airplane. High strength polymer fibers have been found to be the most effective material for this specific use. Armored glass Armor Glass International, Inc. was founded by Michael Fjetland, BBA/JD, to "armor glass" under the trademark Armor Glass® to provide security from breach of the glass by natural disasters, explosions, burglars, hurricanes, tornadoes, hail, golf balls or other harmful events. One of the main products offered by this company is security film. This type of film is 8 mil thick, is rated for a Large Missile Impact (Level C 4.5 lb.) and is placed on the inside of a window or other source of glass, the weakest link of every building, to create a more durable and defensive layer. Studies have shown that breach of