What do you do when you can't carry? There are some locations and time that you cannot carry. Airports, Federal Buildings, and work are just some examples of where you are not going to be able to carry. You have to have your situational awareness at the highest level in these cases.
One great example of situational awareness and immediate action preventing a mass shooting was the train incident in France where three American and one French citizen subdued a would be terrorist attacker on a train from Amsterdam. One person was shot during the incident, and several were injured, but a mass shooting was prevented.
So, continue practicing good situational awarenss, especially when you can't carry for one reason or another.
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