It's strange to read all the conjecture about heroes. I am writing a book about Nam. Several of the interviewees received bronze and silvers for heroism. One rescued his wounded buddy who was laying out in the open while enemy fire was pretty thick. Without really thinking about, he just acted . He ran out, grabbed the guy and dragged him to relative safety. His squad saw what he was doing and gave him covering fire.
I asked him why he exposed himself to death and he told me he felt it the right thing to do. It was one of his men ( he was a platoon sergeant).The decision was made in a moments time. Almost a reflexive and instinctive action.
All that happened in Aurora, people running, people ducking and people shielding others, was made in a moments time. I guarantee there was no huddle while theater goers strategized about their next move.
Most guns are sold to responsible people but not all. Every now and then we pay a steep price. At times like this elements of our society resemble the same terrorism we deplore in other parts of the world. Only briefly but it is still there.