Helicopter noise is a sonic mainstay of the D.C. region with more than 80 helicopters flying overhead per day. But for some this sound of copter blades is oppressive and damaging, sparking lawmakers like DC Delegate Eleanor Holmes Norton and Virginia U.S. Representative Don Beyer to demand that helicopter pilots fly quieter. To better understand the rules of the sky and how helicopters really operate we hear from Director of Physical Infrastructure at the Government Accountability Office Heather Krause.
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