The Saudi Royal Air Force and air forces from fraternal nations will participate in the Red Flag - 2019 Exercise, reported the Saudi Press Agency. The 12-day drill will be held next month at the Nellis Air Force Base in the US state of Nevada. The drill, which began in 1975, is among the most sophisticated aerial combat exercises in the world. It aims to train air crews to participate in taking aerial combat positions and handling ground targets and using live ammunition in a real combat environment.