Last week we all watched in horror as yet another school fell victim to a student with a gun. In the end, several students had died and numerous others were wounded. As with many of these types of events, those families who suffered losses were embraced by the community, the country and the world. But there are many more victims than those who were directly injured or killed. Some of the students who witnessed the events or provided help to the wounded will live forever with the images of what...