Travelling - or not travelling?

[Hawks Coach]

Kudos to David. My son, who is an aspiring basketball player and soccer referee, is extremely knowledgeable about the rules and calls every pivot switch he sees. We both notice that it occurs at the 3 point line, as frequently as once every 5-10 possessions in some games. If no pressure on the player, there is never a call. They do call picking up the pivot foot on a drive to the basket fairly consistently, but not the pivot switch for a three point thrreat or shot.