This Mr. Boice in the article seems to be a bit misled:
"But Mr. Boice said he believed security and a system of alerting people about crises had been improved since then, and he worried that disputes best handled by campus security could quickly turn deadly with more guns on campus.
“I grew up in the country and a lot of people had guns,” Mr. Boice said. “But my father said never carry a gun unless you are prepared to kill somebody, and I believe that.”"
His father should have explained that being prepared to kill somebody and going to kill somebody are two different things. Nothing wrong with being prepared . . .