Why there are thousands of Giant Arrows Across the US

Why there are thousands of Giant Arrows Across the US

So the government created the highway of lights, a system of light beacons and large arrows that guided pilots. 1,550 beacons stretched across 18,000 miles. … Before the highway of light it took 83 hours to get a letter across the US. After the system was put into place it took just 33 hours

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