380
NASA, Lockheed Martin Reveal X-59 Quiet Supersonic Aircraft
(www.nasa.gov)
This is a most excellent place for technology news and articles.
Here is an alternative Piped link(s):
https://piped.video/2jAH-51feAA
Piped is a privacy-respecting open-source alternative frontend to YouTube.
I'm open-source; check me out at GitHub.