Selected by the US Department of Homeland Security as a Qualified Anti-Terrorism Technology, Escape Rescue Systems' is a collection of collapsible cabins, permanently stored on the roof in a folded position. It's independently powered and operated to ensure its availability in a mass emergency. In their folded form, the cabins are lowered to ground level, where first responders unfold and enter the cabins. The evacuation system can rescue 30 people per cabin every 8 minutes.
The building I used to work in has one of these amazing systems...
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