I WAS GIVEN MY OFFICAL OFFER TODAY!! (Fashion/dresscode questions)

Update; resolution: the vaccine is not required at my agency (TN) But it is offered if I choose to take it.

Hi all, I've posted a couple times through the hiring process and today I'm happy to announce im officially part of the team. My start date is the end of this month. I was sent our dress code and it's super laid back and one of the things allowed are 911 related tshirts (they just can't be offensive, swear, or depict smoking, drinking, etc) Does anyone have any 911 related tshirt shops? Maybe etsy? If you have any recs I'd love to know!