If only everyone were carrying a gun, this would not have happened.This is true. It would have happened differently. Instead of a lone gunman barricading himself we would be reading about an Old West-style shootout at NASA.
Things would also have happened differently if it were not so very easy for any semi-lucid wacko to get his hands on all the weapons he could ever want.
Photo is from the Goldfield Gunfighters website. Fake gunfights for those who think there are not enough real ones in the country.