Services were held across the country today to commemorate the terror attacks of September 11, 2001.

FOX's Tonya J. Powers has more:

One by one, the bell was rung...

The World Trade Center flag was presented and almost 3,000 names were read:

"Robert John Deraney"

Marking the 16th year since the hijacked planes hit the World Trade Center towers in lower Manhattan and the Pentagon and crashed in a Pennsylvania field.

The Pentagon ceremony was attended by the President and First Lady, and Vice President Pence spoke at the event in Shanksville, Pennsylvania.

This evening at Ground Zero, the 9/11 memorial plaza will be opened to the public to remember those lost.

In New York City, Tonya J. Powers, FOX News.

Follow Tonya J. Powers on Twitter: @TonyaJPowers