I went to a major college basketball game at an NBA arena last year. I was armed. They had me go to the security office and write down what seat I would be sitting in. Last night I went to a concert. I was armed. They just called a supervisor over, he checked my ID, and sent me in with a "thank you."
I am not a police officer, but I have a concealed carry permit.
I carry a concealed handgun every time I go in the Hampton (Virginia) Coliseum for any event. The management does not like it, but they cannot stop me because Virginia law restricts them from banning concealed weapons on their premises.
I’m pretty sure any arena/stadium in Virginia which has been in any way subsidized by taxpayer dollars is subject to the same legal restriction (those located on school properties excepted, of course).