Detailed Instructions: In this task, you are given a piece of an article. Your task is to generate a short summary of the text. Try to give the summary in just one sentence.
Q: A plane carrying several cadets and officers from the United States Air Force Academy in Colorado Springs made a safe emergency landing in the northern New Mexico city of Las Vegas due to ice build-up on the aircraft.
A:
Mulberry chief executive Bruno Guillon has stepped down.