They did directly own/operate aircraft in the past as well, as disclosed in letters to investors. https://sentinel-aviation.com/blog/warren-buffett-nicknamed-h

They did directly own/operate aircraft in the past as well, as disclosed in letters to investors. https://sentinel-aviation.com/blog/warren-buffett-nicknamed-his-private-jet-the-indefensible-then-renamed-it-the-indispensable-after-realising-its-value/ https://sentinel-aviation.com/blog/warren-buffett-nicknamed-...