[QUOTE=allpurpose;8470173]
I wonder if they meant the competition flags, of which there are many at that venue? Those can be flown at half-staff.[/QUOTE]
If you click on the link to the article posted above (http://www.palmbeachpost.com/news/news/local/one-dead-one-hanging-on-in-wellington-polo-club-wr/npxD3/#8550049), there is clearly a photo in there of the American flag at half staff with the description, “The flag flies at half-staff over Global Dressage Stadium in Wellington, Florida on January 4, 2016. Sophie Walker of Wellington died at the scene of a car crash in The Polo Club early Monday morning.”