American Football Rules IFAF Approved Ruling 3-3-5:VIII and IX

VIII. Late in the first half Team A is out of timeouts. A pass play on third down ends inbounds at the B-25 short of the line to gain with the game clock showing 0:10. Facing fourth down and three, Team A immediately hurries its field goal team onto the field. RULING: Team B
should reasonably expect that Team A will attempt a field goal in this situation and should have its field-goal defense unit ready. The umpire will not stand over the ball, as there should be no issue of the defense being uncertain about the next play.
IX. Late in the first half Team A is out of timeouts. A pass play on third down ends inbounds at the B-25 short of the line to gain with the game clock showing 0:30. Facing fourth down and three, Team A gives no indication as to its next play until the game clock reads 0:10. They then rush their field goal unit onto the field, and Team B then hurries to respond. RULING: The umpire moves to the ball to prevent the snap until Team B has had a reasonable opportunity to get its field-goal defense unit onto the field. The umpire will step away when
he judges that the defense has had enough time. If the game clock reads 0:00 before the ball is snapped after the umpire steps away, the half is over.