If one goes down the maybe, what-if, just-in-case rabbit hole, some curious things can be found.
"To prepare for an active shooter, faculty and students at Oakland University are arming themselves - with hockey pucks.

The idea of using the quirky self-defense tool grew out of a training session Police Chief Mark Gordon led in March for faculty members on what they should do if a gunman enters their classroom.

A participant asked what people could bring to campus to be better prepared in case they need to fight back...

...Following up on the suggestion, Tom Discenna, a professor of communication and president of the faculty union, spearheaded an effort by the union to purchase 2,500, 94cent hockey pucks.

OU using hockey pucks against active shooters

Follow the link below to view the article.
https://freep-mi.newsmemory.com/publ...reid=1ec2b30b1