David Hogg was 18 and just a few months from graduation when a shooter entered Marjory Stoneman Douglas High School, killing 17 people and injuring 17 others. David used his phone to record his experience and interview fellow students. It was the beginning of his career as a gun reform activist. David has addressed lawmakers, spoken to the national press, and traveled around the country speaking to fellow teens about the importance of voting. His experience made him a strong teenager. In this book, readers will examine his life story and learn more about his efforts to stop gun violence through narrative text, engaging photos, and graphics. Readers will come away inspired to lead and be Teen Strong.