New video obtained by NBC Bay Area of the tour bus crash in San Francisco's Union Square shows one man nearly crushed by scaffolding at the moment of impact.
Another angle from surveillance video that captured Friday's accident shows the bus careening down Post Street before it crashed right near the new Apple store, which is under construction.
Officials said 20 people were hurt in the crash and three are still in critical condition.
Investigators blame a mechanical failure for the crash. An investigation is ongoing.
