KEEPING TIME IN INDOOR SOCCER

Question:
In indoor soccer, if a ball is struck BEFORE but crosses the goal line AFTER the final whistle, has a goal been scored or is the game over immediately upon the final whistle?

USSF answer (February 4, 2010):

We cannot speak to whatever rules may be played at the arena you use, but normally with indoor rules you have to live with the arena horn. The rule states: “. . . the whole of the ball must cross the goal line BEFORE the horn begins to sound for a goal to be scored.” We suspect that is why pro indoor uses goal judges, even though the referees on the floor have the final decision.