What's FDNY?
Fire Department of New York.
okay. That's random from the WWE then
Not too random when you consider what month it is in a couple of weeks. WWE are huge supporters of the services.
September...and?
September? New York? if they're using the FDNY on the shirt, I do hope they're donating something to them, otherwise I find it distasteful. 9/11 should NOT be exploited to make money, unless it's money to be raised for those services.