[What's that sound? Why, it's the sound of breaking glass. A thousand panes of glass, all shattering at once.
At roughly eight in the evening on an otherwise normal Sunday in Manhattan, every pane of glass in Stark tower
explodes. Nothing is spared - screens, windows, panes set into doors, glass floors a half a foot thick, nothing. In a single moment, with a shrieking like the reality itself has been briefly unzipped, the tower bursts at the seams in a glittering shower of shining splinters.
The cement and steel of the building's frame and foundations are untouched, and the frames that surrounded what glass there was are undamaged. Glass falls dozens of stories to the ground, and the lack of casualties is pure luck and timing, really. The place was deserted on this quiet Sunday evening. Some late-staying Stark employees are injured by flying glass in the laboratories, but there are no deaths.
There are no suspects, either. No one saw anyone near the tower who looked suspicious, and there is no evidence of explosives. Even stranger, the surrounding buildings shine in the sun as normal the following morning, completely untouched. This was obviously not a natural phenomenon, and throughout the night, even major news outlets begin to ask questions - where where the Avengers when all this occurred? And how can they be expected to protect anyone, if they can't even keep their home, one single skyscraper, intact?]