Pope Francis waves from the plane's steps upon his arrival at the Rome's Fiumicino airport on September 19, 2015. The pontiff heads for Cuba on September 19 on the first-leg of a trip that will also take him to the United States for his most high-profile overseas visit to date. AFP PHOTO / TIZIANA FABI        (Photo credit should read TIZIANA FABI/AFP/Getty Images)