The Haftarah of Yitro is the vision of the angels saying “Kadosh, Kadosh, Kadosh”, in Yeshayahu. The Sefardim end there, but we continue to the next chapter (thematically linked by the concept of shaking in fear).
This time, I wrote about what this vision has to do with Matan Torah, the topic of Parshat Yitro : The Armies of G-d
Linear annotated translation of the Haftarah of Yitro
Pictures of 6-winged Seraphim are left to your imagination