New York: Australian Prime Minister Malcolm Turnbull has had a busy morning in Manhattan ahead of his meeting with US President Donald Trump.
Mr Turnbull received a tour of the NYPD's state-of-the-art Joint Terrorism Taskforce and operations centre on Thursday.
The facility is about the size of an indoor basketball court and features hundreds of video screens linked to around 10,000 law enforcement, government and private video cameras across New York.
It will be the security nerve centre for Mr Trump's New York visit on Thursday afternoon.
Mr Turnbull then walked several blocks on public streets, surrounded by a ring of Secret Service officers, to a meeting with Admiral Harry Harris, commander of US Pacific Command.
Mr Turnbull is scheduled to meet with Mr Trump at a Manhattan hotel on Thursday afternoon.
The two leaders will then address the 75th Battle of the Coral Sea anniversary event on the USS Intrepid aircraft carrier.
AAP