journal left behind by the gunman, 19-year-old darion marcus aguilar. they are still not sure if he knew his victims, 21-year-old brianna been low and 20-year-old tyler johnson. today their families are struggling to make sense of what makes no sense at all. >> with tyler, we have lost a kind, positive son who reached out to help others in need and he made a difference. it's so unbelievable. our prayers are with him. the other victims. and all the people who have been touched by this senseless violence. >> police say aguilar legally bought the 12 gauge shotgun back in december. investigators say he was also carrying a backpack with two home made bombs but both were disabled. edward snowden is making headlines again this morning. lobbying out new accusation