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odd helicopter
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kregg
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September 8, 2019 - 10:31 am
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the other night while lying in bed I felt more than heard this buffeting of air through my window.  I could actually feel the air hit my face while at the same time I could hear but very faintly the sound of helicopter rotors. This wasn't the local hospital chopper.  It must have been way up there.  Also there was no wind, the night air was still.  Is there a big military chopper that could be the cause?  And in the news last week was the story of high up balloons being used to monitor traffic on highways. Maybe looking for persons of interest?  I don't know but "a balloon"?  A balloon is gonna go with the wind so how would that work?  Would you use a chopper in conjunction with the balloon?  Anyway it was really strange to actually feel the buffeting of air hit my face from such a distant sound.

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CKK
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September 22, 2019 - 1:18 am
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Two helicopters come to mind. CH-47 Chinook is a two rotor known as a flying school bus. Heavy lifting as well as troop transports. Second would be the HH-53 which is used by Navy Marines and low key by the Air Force. Multi role is a good description and it it a big machine. Three jet turbines power its 5 main rotor blades. Go to You Tube and look up the two birds. Should be videos where you can listen to the sounds of both. If you were feeling rotor wash, that’s low.

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Peter Johnson
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March 27, 2020 - 2:23 am
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It is very interesting! Thank you for sharing!

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Guy
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May 4, 2020 - 2:36 pm
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I don't know about helicopters, but tethered blimps are definitely used for surveillance. "Fat Albert" was one such tethered blimp in the Florida Keys that was used for 30 years for anti-drug surveillance. Only recently (2013) was it taken down.

https://thekeywester.com/2013/.....eys-blimp/

Ever since the first time I came to the Florida Keys, I can remember seeing Fat Albert flying high in the sky. The blimp has been based out of the aptly named Blimp Road on Cudjoe Key since 1980. I always thought that it was a weather balloon. But, as it turns out, it is a military surveillance system owned by the US Air Force.

This tethered aerostat radar system is capable of detecting low flying objects. It’s primary mission though out the years has been to help federal officers with counter-drug operations. Just having the blimp present has deterred crime in the nation’s southernmost border. It has also proved a huge help to the US Coast Guard with drug interdiction through the years.

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