Skeptics point out that many famous 'inexplicable' videos are actually the result of camera tricks and technology limits. Modern fighter jets use highly complex software to clean up images, which can accidentally create weird, glowing shapes that look like flying saucers but are not actually there. Also, secret military projects are constantly being tested. Different branches of the government often do not talk to each other, leading pilots to mistake their own country's top-secret drones for alien craft.