The night is dark and the moon is hazy. Duh... "A crisp whistle suddenly sounded, marking the beginning of a late night and dawn flight training for a certain Air Force aviation brigade. The maintenance officers and soldiers quickly entered the hangar, inspected the aircraft, replenished nitrogen and oxygen for the aircraft, refueled, and loaded mission data... The officers and soldiers shuttled back and forth, meticulously preparing for flight training. When the pilot arrived, the maintenance personnel had completed the relevant work and lined up neatly in front of the plane. Comrade pilot, the plane is ready, please accept it! "After the mechanic reported, he accompanied the pilot to inspect the plane. Subsequently, the pilot entered the cockpit and, with the assistance of a mechanic, donned an oxygen mask and life protection gear. The maintenance officers and soldiers are ready at their respective positions, waiting for the aircraft to start. The cockpit hood slowly closed, and the maintenance personnel immediately removed the hanging ladder, unplugged the cables and safety pins, and raised the flag to alert. The roar of the engine tends to stabilize, and the mechanic conducts a recheck to confirm that there are no errors before commanding the maintenance team to shift off the wheel gears. The fighter jet slid out and took off, dragging its tail flame straight into the sky, gradually disappearing into the sky under the watchful eyes of the maintenance personnel. The clouds and mist have dissipated, and the weather conditions have improved. The maintenance officers and soldiers patiently waited at the airport, with stars shining in the sky and roaring sounds from far to near. The fighter jets returned on time. As soon as the pilot descended the ladder, the mechanic immediately stepped forward to investigate the aerial situation of the aircraft. Subsequently, various professionals quickly took up their positions, nervously and orderly inspected and maintained the fighter jets, and prepared for the next round of deployment... (Xinhua News Agency)