Think about it,in roswell,new mexico,there were numerous rumours and even sightings of lights and dots that werent known human vehicles.
The second world war ended in 1945 and even then there were people trying to invent stuff.What if the government made some kind of breakthrough in technology,or what if somebody in the future accidentally crashed ,or what if what many people believe. What if aliens attempted to do something in our atmosphere,whether it was land,spy on us,or even escape something.
I believe that the government found 'something' in that desert,i dont know what exactly,but it was big enough to try and hide from the public.
There has to be alien life somewhere in the universe,we cannot be the only inhabited planet.Some other organism,somewhere, must have done the same as us,evolve,evolve into whatever. we are almost definitelly going to be 'visited' sometime.And i believe that has already happened,in 1947!
What do you think? For more visit
www.howstuffworks.com and search for ufo's