“Last time we visited with her in person we talked about prepping and you know, are you ready for what can happen down the line when the economy collapses,” said the gunman’s aunt, Marsha Lanza.
The reporter asked, “Survivalist kind of thing?”
“Yea,” said Marsha Lanza.
Nancy’s guns were supposed to be for self defense. Marsha Lanza called her nephew a special needs child. So far, no motive has been released.
The Daily Mail has a similar report about Lanza, identifying her as a member of the Doomsday Preppers movement. There are many errors in that article, so take that for what it's worth. But it does comport with what Marsha Lanza said about her.
Doomsday Preppers is a show that airs on the National Geographic Channel. It profiles people who are preparing for the end times by stockpiling and training their children in firearms handling. Here's a video of a father teaching his daughter how to use a gun.