There are no real surprises in this ABC News story (via Digby), nothing that common sense couldn't tell you, but given recent statements by the NRA and its allies, this is an excellent reminder of the huge gap between the action-hero fantasy and the reality of these situations.
Police officers and military personnel are selected for having suitable skills and personality, trained extensively and continuously and re-evaluated on a regular basis and yet even they avoid these scenarios whenever possible (and occasionally end up shooting themselves or innocent bystanders when the situations are unavoidable)..
While there are exceptions, the odds of a civilian with a concealed weapon actually helping are extraordinarily small.
Most of us fantasize about being able to do what an Army Ranger or a SWAT team member can do. There's nothing wrong with fantasizing or even with acting out those fantasies with cardboard targets on a shooting range.
The trouble is, as our gun culture has grown more fantasy based, the people like Wayne LaPierre have increasingly lost the ability to distinguish between real life and something they saw in a movie.