UFO sightings go back thousands of years. A new plane doesn’t explain UFO sightings. Maybe some sightings, but the Aurora goes in a straight line, not zig-zag and doesn’t land in rural areas.
Really? Thousands of years? Do you have a link to a collection of documented accounts?
Of course, there is also Ezekiel’s Wheel: http://net.bible.org/bible.php?book=Eze&chapter=1#n23