The racecourse protest siren, akin to an air-raid warning, can kill euphoria in a split second.
The connections of Race 1 winner at Ellerslie last evening, Thatsforsure, stopped their celebrations in a stride when the connections of runner-up Leica Glory protested, alleging home-straight interference.
Thirteen owners said pretty much the same thing: "If we lose it, we lose it, the main thing is we have a terrific horse." And they do.
Thatsforsure came from last, went around the entire field five wide on the home bend and powered away, shaving Leica Glory as she breezed past easily.
The remarkable element was horses can't win from the back of the field at Ellerslie when the rail is out 12m, particularly when having just their second visit to the races, but then not all horses are by Tavistock, who can do no wrong.