The home stretch and stands are empty at Santa Anita Park in Arcadia, Calif., Thursday, March 7, 2019. Extensive testing of the dirt track is under way at eerily quiet Santa Anita, where the deaths of 21 thoroughbreds in two months has forced the indefinite cancellation of horse racing and thrown the workaday world of trainers, jockeys and horses into disarray. (AP Photo/Damian Dovarganes)