Commemorations to the victims of the 911 attacks will be taking place across the country today.
A ceremoney at the church at Dublin Fire Brigade training centre has taken place in memory of the 343 firemen that lost their lives saving those trapped in the twin towers.
President Mary McAleese was in attendance, along with the US Ambassador Dan Rooney and Dublin Lord Mayor Gerry Breen.
This afternoon, a ceremony of reflection and peace will be hosted by Ambassador Rooney at the RDS and will be attended by President McAleese and the Taoiseach Enda Kenny.