NEW YORK - OCTOBER 26: New York City Mayor Michael Bloomberg (R), joined by National September 11 Memorial & Museum President Joe Daniels (L) and former AIG CEO Maurice R. Greenberg, speaks during a press conference after planting the 50th swamp white oak tree at the site of ground zero October 26, 2010 in New York City. Approximately 250 trees will be planted at the site by the 10th anniversary of 9/11. Click Here! NOTE: There are other types of media to browse for this article. Please click any icon on the right to explore further.