[ArneFufkin]

Around her neck dangles a security badge bearing the letter "A."

I'm going to need to use an audience lifeline for this one ...

[TontoKowalski]

I think the reference is to the character in "The Scarlet Letter" who was forced to wear a red letter "A", which stood for "Adultress"...I think the character's name was Hester Prine, but it's been so long since I read the book, and my memory is deteriorating in my old age.