The 43 Defense has proven to be one of the most effective defenses, at all levels of football, throughout the years. Learn how to implement all aspects of the explosive 43 Defense including:43 Defense Personnel - 43 Defense Alignments and Responsibilities - 43 Defense Techniques - 43 Defense Adjustments - 43 Defense Blitz Packages - Zone Blitz Schemes for the 43 Defense - and more Appropriate for all levels of football including youth, junior high school, high school, and college