A brief history about that place out in the desert where they keep "them aliens". 

Sources:

https://www.bbc.com/news/world-us-canada-49568127

https://en.wikipedia.org/wiki/Nevada_Test_and_Training_Range

https://www.britannica.com/topic/Atomic-Energy-Commission-United-States-organization

https://www.britannica.com/place/Area-51

Sources:

Music: https://www.purple-planet.com