I had several 9/11/01 FDNY/NYPD tee shirts made up by Lands End. We have dress down Fridays here at work. I have worn a 9/11 tee shirt under a dress shirt every Friday since 9/11 (I have made a reorder since 2001).

I intend, God willing, to wear the 9/11 tee shirt every Friday til the day I die.