What are the roles of officials in javelin?

Answer 1

The roles of any official in the throwing events in track and field are to make sure the athlete does not throw out of the throwing sector, make sure he/she doesn't step out of the runway or ring, and make sure that he/she steps out of the ring or runway correctly (runway must be entered and exited through the side, and throwing ring must be entered and exited through the back half of the ring).