1. Use the Internet and other sources to research light- weight armor, identifying several types. For each, note the materials being employed and the design features being employed to produce the desired result. 2. Discuss briefly how the materials and design features might differ for two or more of the applications described above. 3. How have the materials used in military helmets changed over the past 50 or more years? 4. How are the requirements for a football helmet or a motorcycle helmet similar or different from a military helmet? What materials are being used in these applications?