Core Viewpoint - The annual "Red Flag" military exercise, involving the U.S. and allied air forces, has for the first time included fifth-generation fighter jets as hypothetical adversaries, specifically referencing China's J-20 and J-35 fighters, indicating a shift in focus towards high-tech threats from China [1][2]. Group 1: Exercise Overview - The "Red Flag" exercise, established in 1975, has evolved over 51 years and includes participation from the U.S., UK, and Australian military forces [1][7]. - This year's exercise took place at Nellis Air Force Base in Nevada, featuring over 100 aircraft, including the U.S. Marine Corps' F-35B Lightning II, UK Typhoon fighters, and Voyager tankers, along with 3,000 military personnel [1][7]. Group 2: Tactical Developments - The U.S. and UK air forces were divided into two teams during the exercise: the "Blue Team" representing allied forces and the "Red Team" simulating potential adversaries, with the latter composed of trained pilots adapting to the tactics of high-tech opponents [2][8]. - The F-35B was specifically modified to simulate the tactics of China's J-35 fighter, highlighting the exercise's focus on preparing for engagements against technologically advanced adversaries [2][8]. Group 3: Strategic Implications - Military experts noted that the inclusion of China's J-20 and J-35 in the exercise reflects the growing recognition of their all-weather operational capabilities, prompting Western nations to take these threats seriously [2][8]. - The exercise's outcomes, particularly the portrayal of the Blue Team's victories, may be influenced by subjective factors, as there are political motivations behind emphasizing the strength of potential adversaries [3][9].