A photograph of a 9/11 victim lies atop the 9/11 Memorial on September 10, 2013 in New York City. The 9/11 Memorial has become a major tourist attraction for visitors to New York City.
The Philadelphia region reacts on Twitter to the 12th anniversary of the Sept. 11, 2001 attacks.
Photo illustrations, Instagram images and words of comfort were shared. Both Pa. Governor Tom Corbett and N.J. Governor Chris Christie tweeted their thoughts.
@PaigePoofkinz tweeted: Rest in peace to the men and women who lost their lives on this day 12 years ago. #NeveryForget #september11
Read NBC's coverage of the 9/11 anniversary here.