What's inside the top of the antenna-spire? In the documentation video I saw some strobe lights: http://time.com/10672/making-the-world-trade-center-panorama/

What's inside the top of the antenna-spire? In the documentation video I saw some strobe lights: http://time.com/10672/making-the-world-trade-center-panorama/ http://time.com/10672/making-the-world-trade-center-panorama... And a MacBook notebook, as someone pointed out. But what else is behind the glass?