Lee-Gardner Amendment would reduce supersonic fuel burn
&quot;Pilot Lt Col Ed Yielding and Reconnaissance Systems Officer Lt Col Joseph Vida took off at Palmdale, California and landed at Washington-Dulles a scant hour, four minutes, and 20 seconds later.&quot;[1]<p>I don&#x27;t remember any sonic boom complaints when this or other record setting SR-71 flights over the US occurred. If you are flying in thin atmosphere the magnitude of the sonic boom at the surface should be much reduced. So, maybe it would be ok to fly supersonic at 70,000+ feet. Of course, it might be disconcerting if you were flying subsonic at 38,000 feet.<p>[1] <a href="https:&#x2F;&#x2F;www.google.com&#x2F;amp&#x2F;jalopnik.com&#x2F;the-sr-71-blackbird-retired-by-flying-coast-to-coast-in-1689846454&#x2F;amp" rel="nofollow">https:&#x2F;&#x2F;www.google.com&#x2F;amp&#x2F;jalopnik.com&#x2F;the-sr-71-blackbird-...</a>