Thought that bridge looked familiar. Turns out his video was shot in the Truckee River Canyon, just south of Verdi, Nevada about half a mile from the California state line and about 10 miles from my house. He may be wanting to remain anonymous because he's probably breaking at least a couple of Nevada drone laws, including trespassing by flying less than 250' over private property (assuming he didn't have permission from UPRR and had received prior notice from them for previously trespassing, probably not likely, but who knows) and flying less than 500' from a "critical facility" (power generating station & transmission lines), again assuming he didn't have permission from the power company. Nevertheless, pretty incredible flying and amazing control!