Natural Gas or Aliens?

Right now I'm visiting Fort Worth and staying with my parents. Once a rural oasis, my parent's house is now filled with the alien-like sounds of a nearby natural gas rig. The constant hum of machines accompanied by strange, wavering, high-pitched noises make me think that ET is going to walk though the door at any minute. And if ET does walk through the door, I will run straight to my car and won't look back until I'm in Lubbock.