Kling 2.5 Turbo (pro) Prompt: Seamless 5-second looping video of US Marines marching in perfect formation, wearing current digital camouflage uniforms with helmets and modern gear, synchronized steps, cinematic mid-body perspective, realistic lighting, ultra-detailed textures, subtle depth of field, begin frame identical to end frame, smooth continuous motion, slight camera parallax for realism, cinematic color grading, 30fps, 4K resolution, ultra-realistic