Terrible. There really needs to be a better screening process for people with various types of mental issues. One would hope that the greatest of cares could be taken especially in regards to people with a military background.
Personally, I've always been of the opinion that in order to own a gun, you should be required to constantly have to subject yourself to re-evaluation. Meaning you have to continuously prove, at least once every 3 months, that you are still fit to own that weapon. The second amendment is all well and good, I'm not going to pretend that there aren't demonstrable positives that come with the right of law-abiding citizens to own a gun, and protect themselves. I also understand that a lot of responsible gun owners worry about where exactly the government would draw the line in terms of what defines mental stability, and what kind of medication you would be allowed to take without losing that right they so value….but, clearly, we have to agree there must in fact be a reasonable line somewhere. Identify it, and put measures in places to make it as hard as possible for anyone at that threshold to get access.