Unless there is something special about it, you didn't *have* to.
I'm not sure any hospital in Indiana doesn't have such signage.
I'm not aware of any of those hospitals being a place prohibited by law.
While taking my daughter to the ER at the new hospital in Mishawaka, I noticed a NO GUNS ALLOWED BY STATE LAW sign. Had to carry my sick daughter back to the van and out my gun away. Do they have a daycare there? Or did I miss something else?