 The court is very tradition bound. It's all nine justices. They shake hands before they take the bench and then they enter the courtroom and take their seats. Everything is in order of seniority. The senior justice is the chief justice, not senior by the number of years he's been on the court, but as the chief justice, he is most senior. And then they go down the road to the most junior, which is the newest justice, Katanji Brown Jackson, President Biden's only nominee.