Donald Trump's transition from a flashy businessman and reality TV star to the President of the United States is keeping the security services busy.
A no-fly zone has been imposed over his home and workplace, Trump Tower, on Fifth Avenue in New York.
The 58-story building, which was the setting of the NBC television show The Apprentice, is not only Trump's main residence but also a massive tourist hotspot.
The Federal Aviation Administration has issued a temporary flight restriction for a 2-nautical mile radius around Trump Tower that will effectively put a stop to popular sightseeing flight paths.
The no-fly zone will be in play until Trump's inauguration on Friday 20 January, 2017, when he will move into the White House.