Almost as sad as the fact that these young people were killed is the media's level of interest is determined by the method of their murder.
I keep insisting that people who conceal carry should always have a knife as a twin to their gun. Knives complement handguns exceptionally well, especially inside buildings.
The Tueller Drill is often cited, but this is of an armed police officer *expecting* a knife attack, who still needs more than 21 feet to have an advantage. A civilian, with concealed carry, who is *not* expecting an attack, needs, as a rough guess, 30 feet or more to effectively use their gun this way.
http://en.wikipedia.org/wiki/Tueller_Drill
However, a sheath knife can be very rapidly drawn, and it provides good quality defense within 5 feet, even being aided by the momentum of the attacker.
Soldiers in trenches in World War I quickly figured out that the ideal combination for hand to hand fighting in a trench was a pistol in one hand and a trench knife in the other. And, if you think about it, the corridors and rooms of a building are not very different from a trench with a ceiling.
But it is also a great combination outside, because you may not be aware of a threat until it is close, and discreetly brandishing a knife is an effective counter to an attack without attracting too much attention in case it isn’t.