Observed since 2014 a very loud machine sound from underneath building, rumbling is so loud, shakes my furniture, unable to sleep. i live on the top floor and have heard what i think are electronic beings on the roof. i know they have a contact with a craft as i think it uses the building to obtain water, as i can feel a heavy pressure that is extremely stressfull. not sure if you will get this, as they are in my computer as well, as computer company reports to me, they are professionals at hacking.