Sad....another person goes "Postal." Depression, desperation and despair are a deadly cocktail waiting to explode and innocent people get killed or seriously hurt.
If someone had been armed, the damage may not have been as severe. The reason for carrying a gun is indeed self defense and to protect your own life and if effect, those that are around you.
Just another proof that an armed society is a safe society. Without a gun, one can fall victim to anyone that has taken the plunge off the deep end. Very sad and preventable, or least could have been minimized.
May the Schwartz Be With You.