I'm not studying the heroes who lead navies--and armies--and win wars. I'm studying ordinary people who you wouldn't expect to be heroic, but who, when there's a crisis, show extraordinary bravery and self-sacrifice. Like Jenna Geidel, who gave her life vaccinating people during the Pandemic. And the fishermen and retired boat owners and weekend sailors who rescued the British Army from Dunkirk. And Wells Crowther, the twenty-four-year-old equities trader who worked in the World Trade Center. When it was hit by terrorists, he could have gotten out, but instead he went back and saved ten people, and died. I'm going to observe six different sets of heroes in six different situations to try to determine what qualities they have in common.