Crown Prince Sultan bin Abdulaziz, the Deputy Premier, Defense and Aviation Minister and Inspector General, arrived here on Monday morning to undergo some medical check-ups. He was welcomed at John Kennedy Airport by Prince Turki al-Faisal; Prince Khalid bin Sultan, the Assistant Minister of Defense and Aviation for Military Affairs, a number of other princes and senior officials. Crown Prince Sultan is accompanied by Prince Salman bin Abdulaziz, the Governor of Riyadh region, a number of other princes and senior officials.