Gigantic orbital ring around an alien planet, structural failure propagating at high velocity, entire sections tearing apart while traffic is still moving across it. Wide shot: the ring mid-rotation, a fracture suddenly racing along its surface faster than expected. Hard tracking: camera locked to the crack as it splits structural layers, tearing through habitats and transit lines. Close pass: maintenance ships accelerating along the ring, barely outrunning the collapsing structure behind them. Near-failure: a ship misjudges speed, the surface drops away beneath it, forced to boost last-second to avoid being pulled into open space. Chain reaction: rotating segments begin desyncing, colliding edges grinding and breaking apart. Interior shot: corridor violently shifting, gravity flickering, people and debris slamming into walls as atmosphere vents. Exterior whip: a massive section snaps free, rotating unpredictably, narrowly missing a fleeing ship. Precision escape: pilot threads through a collapsing lattice of beams and cables, gaps closing in real time. Shockwave: structural failure releases energy, pushing debris outward, ships struggling to maintain trajectory. Final moment: a huge arc of the ring tears loose, drifting away, still populated with lights flickering across its surface. Relentless structural collapse, no pauses, constant repositioning, cascading failures, grounded physics, massive scale with intimate danger.