The White House has apologized for a plane flight that scared New York City residents Monday as it flew low over New York Harbor along with two F-16 fighter jets. Hundreds of downtown office workers fled their buildings out of fear of an attack similar to 9/11. But the plane turned out to be one used by President Obama that was being photographed in a public relations stunt. On Tuesday, President Obama apologized.

President Obama: “It was a mistake, as was stated. It was something we found out about along with all of you. And it will not happen again.”

The plane ride photo-op cost more than $329,000. Obama says he’s ordered a review to find out how the mission was approved.