i'm saying don't prescribe the for whorc anyone who has ptsd. but chronic treatment-resistant i believe it will have good results. >> it worked good and i know there's other people this can benefit from it. i know it's not popular, i know i'll get looked at and people will be skeptical about it. but it's the right thing to do. i'm talking about my personal experience you can't tell me i'm wrong about that. that's why i'm so passionate about it. >> christof putzel. al jazeera. >> next after the latest mass killing the pain only another victim can fully understand. what he did with his anger. later, a view from the other side. why gun owners aim to go public with their firearms. and hot on "america tonight's" website now, reaching out sharing the grief after a mass killing claims a loved one. at aljazeera.com/americatonight. >> following up now on the tragedy in san bernardino. even refocusing on terror threats it is an inevitable part of the conversation after a mass killing. how could someone so sick or evil to do an act like this have access to