"No guns" signs ?

I seem to remember a news story about a lady (I want to say she was a veteran) who had a valid CCW from the state in which she was a resident
she went to visit ground zero and when she saw a sign that said no guns she approached the nearest police officer and asked him where she could check her gun
the officer promptly arrested her for carrying a concealed weapon since the sign said "no guns"


(found a news link but I don't know if this is a reliable source)
http://www.theblaze.com/stories/201...-for-trying-to-check-her-gun-at-911-memorial/