"Senators Obama and McCain, the Democratic and Republican nominees in November's election, will appear together at Ground Zero in the afternoon to lay wreathes in honour of the victims.
In a joint statement from the campaigns announcing their decision to visit Ground Zero together, the two men vowed to come together 'as Americans' and suspend their political campaigns for 24 hours.
'All of us came together on 9/11 - not as Democrats or Republicans - but as Americans,' the statement said. 'In smoke-filled corridors and on the steps of the Capitol; at blood banks and at vigils - we were united as one American family.'
'We will put aside politics and come together to renew that unity, to honour the memory of each and every American who died, and to grieve with the families and friends who lost loved ones,' it said.
Their appearance is to be followed by another in the evening at a Columbia University forum to discuss their views on public service.
The ceremony in downtown Manhattan will pause four times for silence - at 0846, 0903, 0959, 1029 - marking the times when the planes hit the Twin Towers, and the times when each tower fell."
Read the whole article at BBC News.