Rush Sport Medical 1 article published in JoVE Bioengineering Modified Drop Tower Impact Tests for American Football Helmets G. Alston Rush1,2, R. Prabhu1, Gus A. Rush III3, Lakiesha N. Williams1, M. F. Horstemeyer2,4 1Agricultural and Biological Engineering, Mississippi State University, 2Center for Advanced Vehicular Systems, Mississippi State University, 3Rush Sport Medical, 4Mechanical Engineering, Mississippi State University This article provides a novel technique to assess the performance characteristics of American football helmets by inclusion of faceguards during NOCSAE Standard drop tests. Additionally, two more impact locations are proposed to be added to the NOCSAE certification.