The lead official shows great whistle discipline by not blowing across the lane.  Watch as Gold #5 establishes and maintains legal guarding position throughout the play.

White #35 establishes legal guarding position by having two feet on the floor facing the offensive player.  Once he has established legal guarding, he is permitted to jump straight up.  Both the lead and center officials understand the fundamentals of verticality having a NCC (no call correct) on the play.