The 12th anniversary of the Sept. 11 attacks has started with a solemn bell toll and a moment of silence at the World Trade Center site.

The moment of silence at 8:46 a.m. Wednesday marked when the first plane hit the twin towers on a clear, sunny day in 2001. Then, families of the victims started reading aloud the names of those who died.

Christina Aceto read the name of her father, Richard Anthony Aceto. She says she misses her father every day.

[Associated Press]