The Hills heard a strange beeping sound.
A seconed beeping sound followed by a bump, and then everything returned back to normal.
The earlier (UFO-related beeping sound) cases from the 1960's were thoroughly investigated by the Air Force and the Department of Civil Defense, these cases mostly occurred in the states of Washington and Oregon, along the Puget Sound.
Making a deep, pulsating, loud, extremely irritating sound, for 6 minutes.
When the object was on the ground, a steady beeping sound could be heard.
Condon Report, Case 20: Owls ID's as Source of Beeping Sounds.
The Air Foce commissioned the University of Colorado to do a complete investigation and their findings were published in the 1968 Condon report. They concluded that these beeping sounds were being produced by a saw-whet owl.
Ron Johnson, the late Deputy Director of Investigations for MUFON.
UFO flap in the Pacific Northwest that was accompanied by beeping sounds.
Going beep, beep as it went.
Henry McKay had a couple tape recordings of UFO-related beeping sounds from a flap of UFO sightings and audio phenomena that happened in Alberta and British Columbia in the late 1960s. Detail report, analysis of beeping sounds pages 177 to 206 in the 1979 MUFON Symposium Proceedings.
I heard be-beep, be-beep, be-beep.
I heard a strange, loud, metallic beeping sound. It sounded mechanical, like the pings of submarine sonar, and it had a peculiar rotational quality to it, like a Doppler effect.
Suddenly a large scream bellowed forth followed by a very loud electronic beep.
I said "Listen I heard a beep and on queue a loud scream - beep."
Object gave off a beeping sound.
Mysterious beeping sound, lasting up to 4 hours and sparks of light, cause consternation in Auburn.
Witness's car radio is overtaken by a clear, continuous beeping sound.
Beeping sound as the craft spit out its fiery downspout.
Strange loud swirling sound changed into a beeping sound as object passed overhead.
In the early 1990's a BBC recording crew picked up a series of beeping tones from a UFO.
Cheryl Powell, then a MUFON investigator. A New Hampshire family recorded beeping sounds on their camcorder during an encounter with a huge triangular-shaped craft that flew over their house.
Unfortunately, only the audio came out on the tape, the video part was black.
Greg Long Examining the earthlight Theory - The Yakima UFO Microcosm.
Yakima Indian Reservation sightings in Washington State. Beeping sounds were reported there along with other locations in the state. While digging through his files found a cassette tape of beeping sounds.
Sputnik a series of Soviet artificial satellites, the first of which (launched on October 4, 1957) was the first satellite to be placed in orbit. Beeping tones from satellite detected.