sentry gun, level 3, mechanical structure, tripod base, red targeting laser, metallic texture, rust details, ammunition belt, aggressive stance, desert camouflage, sandy environment, cacti, blue sky, harsh sunlight, wide-angle shot, detailed shadows, realistic, high-resolution, action scene, defense position, overheating steam, bullet casings on ground, military technology, sci-fi elements, worn metal plates, warning stickers, heavy-duty cables, oil stains, desert warfare.