Folks,
the reason they talk in terms of a base is because they can't fathom the idea of an inhabited Moon, and can't understand how it is that the Moon has an atmosphere.
http://www.disclose.tv/action/viewvideo/120852/Is_This_a_Base_on_the_Moon/
Atmosphere on the Moon:
http://www.holloworbs.com/Lunar_Atmosphere.htm
Dean