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Hush Houses are used all around the Air Force. They are used to test, troubleshoot and evaluate uninstalled jet engines, all inside a near-soundproof building.
Originally posted by darksidius
Okay thank you, with this hush house you can test everything. The ramp to go in the test house seem new, and maybe in future a connection to the runway will be built. But there is a limit in the size for the aircraft to the hush house, as you can only test a fighter size aircraft, but not large enough for a bigger plane, like a bomber.