Investigative reporter Linda Moulton Howe's first segment dealt with the bizarre and still-unexplained metallic, jolting booms that have persisted into April 2012, including in three geographic locations from central Ohio to Tacoma, Washington, to San Diego County, California – all within a 24-hour period. In all three cases, there was no military confirmation of sound-barrier-breaking aircraft and no USGS evidence of seismic events. She interviewed several of the San Diego and Washington "earwitnesses." One in Lacey, Washington described the sound being like a metallic collision of railroad cars followed by rumbling. Linda also reported on another boom mystery which took place in England around the same time period that was associated with a jet and a UFO. Further details.