For the New York Knicks, a 53-year wait for another championship might have been decided by what happened in 4 1/2 seconds.

Swift was accompanied by singers Este and Alana Haim

© AP Photo/Frank Franklin II

The president was unfazed. "It was, I think, mostly cheers," he told reporters after the game before boarding Air Force One to return to Washington. "It was loud, and it was very enthusiastic."

Donald Trump is set to be the first sitting U.S. president to attend an NBA Finals game, bringing strict security measures that will require New York Knicks fans to navigate an extensive safety perimeter around Madison Square Garden and an expected lengthy wait to get inside the building.