Not necessarily.
Vicky Armel &
Michael Garbarino simply went to work on May afternoon in 2006. The guy with the automatic weapons came to them, in the station lot.
None of the students at
Virginia Tech on April 16, 2007 had a mass shooting come to them, too. School policies prohibited any of them from being prepared to deal with the situation more effectively. (Yes, I know, he didn't have anything other than standard magazines.)
At
Columbine, again, trouble came calling.
Seeing a trend?
While I'm not suggesting we should all trade the family grocery getter in for an Abrams and walk around with Tommy guns or
full auto Glocks, it is a little naive to assume that the bad guys won't have anything better than a Saturday night special revolver or that trouble won't come looking...