If the accounts of top UFO researchers are true, this world is an entirely different place than we generally think it is. If airline pilots, air traffic controllers and astronauts all report sightings of alien aircraft, who are we to doubt them? Is it possible that aliens are retaliating for our shooting down of their aircraft at Roswell, New Mexico? Is this the reason the governments of the world have engaged in a massive conspiracy to cover up alien intrusions into our airspace? Is it really our airspace?