Honestly I’ve never asked him, this was me listening as a 12 year old at the dinner table as he ranted about another search as he went into work. Now I have questions haha.
I work in a similar, secure environment. We are not allowed to bring any items in other than our persons, smart card that we scan on enter/exit, and the clothes on our back. We have to leave the facility to use the bathroom, eat, drink, etc.