Untitled Sighting

It was a loud piercing sound, that lasted approximately 22 minutes. These sounds were at 5 to 6 second intervals which lasted about 4 to 5 seconds each. At first there was one distinct sound, (screaming) but then there was an additional "voice" that was louder and screamed longer. Each time the sounds would be heard, neighboring dogs would bark; then when the sounds stopped so did the barking. At the end of the 22 minutes (this occurred from 10:04 p.m. to 10:26 p.m.) it became extremely quiet and the barking also stopped. I have heard other sounds that weren't near as "scary" as these sounds were. These were almost like a Halloween movie sound! Talked to the owners of the dogs, and they said their dogs were petrified after this incident. The dogs refused to come outside after hearing these sounds.