When flying the friendly skies, flight attendants serve an essential purpose, and it's not just to bring you snacks and drinks and make sure the WiFi is working. They also keep the cabin secure and are trained to assist in emergencies. So obviously all passengers should want to treat them with respect and make their jobs as easy as possible, right?

However, you may be doing things that annoy flight crew without even realizing it, and there's a lot people don't understand about their job. So here are 15 little known airline crew facts and ways passengers could make the experience a whole lot easier.