Physical wounds aren't the only ones people must heal from. Meantal wounds are all too real. Speaking to friends who were at the Boston Marathon, I can only encourage them to go and talk to someone. Living with a family member who suffers from PTSD makes you realize all too well how difficult ignoring this can be.
If you, or someone you know was at the Marathon on Monday, please go and talk to a mental health professional. Nothing bad can come of it. For more info on PTSD, please refer to the National Center for PTSD. Here is a link.