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Death From Above
The scenario seems unlikely.
Again, chainlink fences typically already make up parts of the wall centered in more heavily patrolled urban areas—not ideal locales for chucking illicit cargo.
“Whenever cartels try to move drugs across the border, they’re going to try to do that in as remote an area as they possibly can,” says Eddington.
Would a transparent wall, then, help avoid plummeting heroin bags further afield, should someone be walking the unpopulated stretches of the US-Mexico border?
“When you’re talking about remote locations, cartels utilize other technologies. They utilize drug catapults and trebuchets,” says Behlendorf. (In case you haven't taken French combat history in a while, trebuchets are big swinging "siege engines" that usually lob firearms.) "They’re launching drugs not five feet from the wall, or 10 feet from the wall, where a transparent wall would help. They’re launching it 100 feet over the all, 150 feet over the wall. No amount of transparency is going to help you in that context.”
Trump pledged a border wall throughout his campaign; that he has pursued it aggressively comes as no surprise. One would think, though, that he would at least understand what he considers its marquee features–as crazy as that sounds.