Crown Prince Sultan bin Abdulaziz, Deputy Premier, Minister of Defense and Aviation and Inspector General left Riyadh today for the Eastern Region. At Riyadh Air Base, the Crown Prince was seen off by Prince Fahd bin Abdullah bin Mohammed, Assistant Minister of Defense and Aviation for Civil Aviation affairs; Prince Khalid bin Sultan bin Abdulaziz, Assistant Minister of Defense and Aviation and Inspector General for Military Affairs, Prince Salman bin Sultan bin Abdulaziz, Assistant Secretary General of the National Security Council for intelligence and security affairs; Prince Faisal bin Khalid bin Sultan, Advisor at the Crown Prince's Court and a number of princes and officials.