9/11 was one of the worst days in american history, but it also one of the best days. 9/11 gave everyone the courage to work together and protect their home. All these people are heroes in history, they might not be famous or rich or have any special skills, but nobody needs any of these things to be a hero. 9/11 has a lesson from it: everyone is stronger than they think, especially when everyone works together. Everyone that died on 9/11 died because they were brave, they knew crashing the plane away from the white house would have consequences, death, not saying bye to their family, etc. But they didnt care, they took the risk, and most importantly, they did whats right, they showed everyone how to be brave. 9/11 changed US life forever. they didnt just sit around and wait something to happen, no, they did something themselves. Thats what it means to be a hero.