I'm creating this thread because a lot of guys I know have not talked with their wives and children about what to do in the case of a lethal situation.
It is very important that they know how you are going to act and what is expected of them. In the middle of an event is not the time to get in an argument with your wife about whether she should leave without you.
It needs to be defined for at home and when you are at large.
My family's response to this problem was the following:
Our emergency keyword is defcon 1. Kind of funny, maybe even lame but my step son liked it and it isn't in general vocabulary. It is also very short, in a bad situation it is likely I'm going to be busy and not have a whole lot of time to talk.
If anyone in the family says that while we are at home everyone knows what they are supposed to react and what to do.
In public defcon 1 will be followed by: Go, Stay, Down or Follow. If I say go they are to go to the nearest exit or protest. When you go to a public place point out emergency and non traditional exits to your family. The majority of people don't look for them and are going to run for the front door putting you at risk of not getting out fast enough or getting trampled.
I may need to buy them time and may not accompany them and they understand it is not the time to protest.
There is a lot more to it but this is already a kind of large post and my intent is to get people to think about it and discuss it with their families.