Documents relating to helmets.

• "Blunt Impact Performance Characteristics of the Advanced Combat Helmet and the Paratrooper and Infantry Personnel Armor System for Ground Troops Helmet". 2005. [pdf]
• "Hybridized Thermoplastic Aramids: Enabling Material Technology For Future Force Headgear". 2006. [pdf]
• "How Satisfied are Soldiers with their Ballistic Helmets? A Comparison of Soldiers' Opinions about the Advanced Combat Helmet and the Personal Armor System for Ground Troops". 2007. [pdf]
• "Warfighter Support: Information on Army and Marine Corps Ground Combat Helmet Pads". 2009. [pdf]
• "Human Factors Assessment of U.S. Marine Lightweight Helmet Suspension Systems: Standard "A" Pad System vs. a Proposed Suspension System "B" HeadGard by Richard". 2011. [pdf]