We had visited this 9/11 people's memorial in 2008:
http://www.pbase.com/davidandjohn/image/107853507
and found our friend Jon Schlissel's name on this tile:
http://www.pbase.com/davidandjohn/image/107853510
The weather has taken its toll and most were removed during threatened storms and replaced if possible, but although the dove was missing we were moved to find this new tile with his name.