The "Red Flag 2019" exercise began here today, with the participation of the Saudi Royal Air Force through its latest F-15SA Eagle fighters and its entire technical and support crews, at Nellis Air Force Base, Nevada, USA. Alongside the US Air Force, the United Arab Emirates, Belgium, the Netherlands and Singapore are also participating in the exercise. The first day of the exercise witnessed the participation of over 80 aircraft, including the F-35 F-15 F-16 F-18, which carried out a number of pre-prepared scenarios simulating real war.