[1066AD]

many of these citizens carry their guns more frequently since September 11. They know that in case of a terrorist attack on a shopping center, school, church, or synagogue,
Wasn't there a fairly recent case of a potential mass shooting at a college in Virginia (I think) that was quickly stopped by someone with CCW & weapon ? Seem to remember the latter part was not widely reported.

[neverdem]

I think you're referring to what's alluded to in the 7th paragraph of the following story by John Lott.
http://www.philly.com/mld/inquirer/news/editorial/6431396.htm

[neverdem]

Change the previous comment to the following:

I think you're referring to what's described in the 7th paragraph of the following story by John Lott.
http://www.philly.com/mld/inquirer/news/editorial/6431396.htm

Mr. Lott wrote "More Guns, Less Crime" and "The Bias Against Guns". I haven't read either of those books, but I have read a good deal of his other articles and find them persuasive.

Unfortunately, he said he lost all the raw data for the latter book when his computer "crashed", this data reportedly the result of telephone calls, which many regard as a "dog ate my homework" excuse, and he is alleged to have written very favorable reviews for that book at Amazon.com under a pseudonym, IIRC.