Step 1: Dont be crazy.
Step 2: Dont Chicken Little them.
Step 3: Dont discuss the zombies.
Step 4: Dont eliminate hope.
Dos
Step 1: Do know what youre looking for.
Step 2: Do observe your fellow fellows.
Step 3: Do start small.
Step 4: Do use the news.
Step 5: Do practice what you preach.
Preppers’ PING!!
I find it best to start with a really possible real world scenario. Flooding over a wide area, massive snow storm knocks out power for a week, etc. This tends to act like a filter letting you know who is of “like mind” without having to go full prepper on them.
When one lives on top of a fault line one needs no excuse.
http://www.theorganicprepper.ca/30-signs-that-youre-one-of-those-crazy-preppers-06242014
Do: Know what scenario(s) you are prepping for.
Don’t: Tell anyone you don’t need to tell.
If he has more than one pencil for school, he's a prepper.
Zombies - If the sister has ever seen on the local news where someone has broken into a home and stolen a tv, then she knows zombies are real. Zombies are takers which is why she has locks on her doors and probably an alarm system.