Unfortunately, I believe this will become more common. Between vets who are coming home after fighting in Iraq and Afgansitan, the poor job market, and housing crunch, families are going through difficult times.
The point I want to make is that we all need to be aware of our friends and families and what they're going through. Not everyone needs to be on suicide watch, but a keener eye is needed overall. It's very possible that a 5 minute conversation may change someones outlook and possibly, thier life.