Logistically, some sort of air traffic control system is going to need to be in place if the future is really going to include drone package delivery, medical drones , internet-delivery drones , and, of course, massive police surveillance . The skies are going to get too crowded and it’s too easy for bad actors to use drones for nefarious purposes . Even when people have no ill intent, the remote-controlled devices can cause chaos. Earlier this week , two planes fighting wildfires in Colorado had to prematurely drop their flame-retardant payloads because of drones flying in the area—a screwup that cost the US Forest Service somewhere between $16,000 and $20,000.
The earliest known train songs date to two years before the first public railway began operating in the United States . "The Carrollton March", copyrighted July 1, 1828, was composed by Arthur Clifton to commemorate the groundbreaking of the Baltimore & Ohio Railroad . Another song written for the occasion, "Rail Road March" by Charles Meineke, was copyrighted two days after Clifton's, one day before the July 4 ceremonies. The number of songs that have appeared since then is impossible to determine, not only because of the difficulties in documenting the songs but also in defining the genre.