Many people think we should prepare for an alien invasion. And there are some surefire tips to stay alive if aliens invade the Earth: Seek military aid? Obviously. Get a ******? Duh. Get out of the city? Good idea. In the case of a real alien invasion, you should also be peaceful. In ho**r of World UFO Day on July 2, WatchMojo counts down ten tips to make it through the alien invasion ALIVE.