on scene or close to being on scene. retired us navy captain armon joins us with the latest on search and rescue but first to matt finn on how crews are working to find the source of underwater noises that have been detectd the. matt good evening. good evening trace. the u.s. coast guard says a canadian surveillance plane picked up some type of underwater sounds yesterday and again today. but a coast guard captain says they cannot confirm reports that those sounds were happening in 30-minute intervals and also could not confirm those sounds were banging or tapping. the coast guard captain says the recordings were turned over to the u.s. navy for analysis and underwater robots were sent to the area where those sounds came from. an ocean science expert, who s assisting the coast guard said the noises sound like banging but could have come from various sources including a nearby ship. tonight some of the world s best data analysts are determining whether the sounds might have
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last night that is standard operating procedure. so if this sub is lost somebody is in that thing if they re still alive and banging on it so it coincides with the noise. do you think it s just random noise? some say it could be fish. what are your thoughts on that? you know, there s just no way to know. it could be some kind of underwater seismic activity. it could be a function of water flowing over an underwater feature that is just creating some kind of verbal noichlts there s no way to tell without analysis. but the great thing about acoustic analysis is can you take something that sounds very incoherent and say i have no idea what this is and you can gradually remove surface noise, background noise because they re very incoherent but the sound you heard might be more coherentment so getting rid of the background noise and matching it with what you might have in your acoustic libraries saying it s a 75% chance it s this or 80% chance it s knocking
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