![](http://www.alamy.com/thumbs/6/B0196A96-ED60-4DE1-93E3-72BC91CAA425/2BECJ0M.jpg)
Sound mirror, early warning radar
Size: 6000px × 4000px
Photo credit: © Artur Chromy / Alamy / Afripics
License: Royalty Free
Model Released: No
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