Pick whichever best fits — we ask different questions for each so we can act on it properly.
A player, ref, visitor or staff member was injured — during a game, training, or otherwise on site. A staff member will need to submit this on your behalf.
Abuse or an altercation, a security or theft matter, property damage, a fire or evacuation, a dispute — anything that should be on record.
Something that nearly hurt someone, or something you can see could — a blocked exit, a loose hoop, a wet patch nobody has coned off. Nothing has to have happened yet.