Family member struggling with mental health issues on base?

A relative is currently stationed in another state. This last weekend I received several texts, ims, and voice mails from him revealing what seemed to be some mental health issues- delusional, paranoid, depressed, alcohol abuse. This was not "normal" drunk stuff that he was saying. As I talked to other family members about this, I discovered these abnormal calls and thoughts have been going on for sometime. There has also been talk of having and getting guns, killing his wife, "ending it all", as well as "flashbacks" from Iraq. I am worried about him snapping. I am a civilian and want to know if I contact his first sgt, or higher, will there be negative repercussions or will he just be monitored and/or evaluated and treated. I know he needs help of some sort, but I don't want to get him in trouble or end up with a dishonorable discharge.