This document outlines ways to improve any defense from Gregg Smith, the defensive coordinator at Mishawaka High School. It discusses the importance of practicing with purpose through effective drills that teach pursuit, dipping and ripping off blocks, open field tackling, interceptions, and creating turnovers. It emphasizes teaching through film study, scouting reports, and setting goals and points of emphasis each week. The defense aims to have high enthusiasm with smart emotions, work ethic, and no loafing or missed tackles by establishing clear expectations.