"The aviation administration limits amateur drone flights to an altitude of 400 feet and prohibits flying them in controlled airspace without a permit. Flying a drone near a major airport like Newark Liberty requires clearance from air traffic controllers."
This sounds more like a joke than an aviation safety regulation. How do they actually enforce it, is the question. Given the high stakes involved, allot more severe measures and technologies should be involved. How about simply shooting the stray drones down.