I hate to say this but perhaps only folks with an ID card should be able to wear the uniform. Maybe ensure that they show the ID card before any event where the public will be there. The school did a very poor job keeping those kids safe. That guy could have been some psychotic idiot and bombed the place or something. I am retired and not even sure if retirees should wear the uniform after they are done (perhaps to be buried in of course)....I need to hear other people’s opinion of that last sentence.
ID card’s not a bad idea, but I don’t even know if retirees should be wearing uniforms. A good friend of mine is a retired USA colonel and last year he gave a speech/dedication thing at the local vet’s cemetery - I asked him if he was going to wear his uniform and he said, “Nope - I got rid of all of them.”