Holy crap! I just googled "Who can be an Oath Keeper." Check this garbage out -
https://en.wikipedia.org/wiki/Oath_Keepers For those that don't want to click, it states that Oath Keepers are anti-government extremists with links to white supremacy. In the same paragraph, it states that they promise to uphold the Constitution. Those are kind of mutually exclusive groups, but why let logic get in the way.
I was curious because both my boys - aged 15 and 17 when they filled out their work forms - had to pledge an oath to uphold the Constitution. My youngest is much more prone to showing any emotion (older one's got Aspergers). He was so proud to click yes that he wanted to take a picture. He would have been fired, so he didn't. Working for Kennesaw State University and Cobb County School District is a little less dangerous than military and first responders. Their official site,
https://oathkeepers.org/bylaws/#article-viii, made it clear that the kids could be associate members, not members for now.