Most folks think that this is for Military and police only. IMO I do not believe that is the case. An armed citizen could be a game changer in an active shooter scenario. Since the shooting in colorado I think more people should take a look at this type of event and ask themselves if they are ready. Can you make a difference? Either way, there is no right answer, this is a personal choice that you, and you alone will make.
Law Enforcement Tactics for an Active Shooter