Inside Grays Ferry’s Pennovation Center — a 58,000-square-foot research hub from the University of Pennsylvania — you’ll find a half dozen drone startups building out their products and testing their flying gizmos.

Outside, though, within a large netted area known as the Motion Capture Arena, researchers pilot their aircrafts. What’s the purpose of that enclosure? We’re sad to report the space — which we first spotted during a media tour ahead of the official launch last year — has nothing to do with medieval-style death matches between battling drones.

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