As Florida Gov. Ron DeSantis flipped pork chops in front of the cameras at the Iowa State Fair on Saturday, a plane appeared in the broiling blue sky.

It was Donald Trump's Boeing 757 private jet. It circled the fairgrounds, and thousands in the crowd looked up and went wild, cheering for the Republican former U.S. president.

An hour later, Trump arrived in a motorcade from nearby Des Moines airport to a rock-star reception, stealing DeSantis' thunder and reducing his nearest rival for the Republican presidential nomination to a bit-part player at one of the biggest political events on the U.S. political calendar.