Pilots of eight Saudi Royal Air Force F-15s pose in front of their fighter jets at Nellis Air Base, south of the US state of Nevada. Saudi F-15s are in the US to participate in the ‘Red Flag-4' exercise, which was approved by Vice Custodian of the Two Holy Mosques Prince Sultan Bin Abdul Aziz, Minister of Defense and Aviation and Inspector General. Commander of the exercise group Lieutenant Colonel Prince Turki Bin Abdullah Bin Abdul Aziz praised the proficiency of the Saudi pilots who flew thousands of kilometers in all weather conditions from the Kingdom to the Nellis base.