Americans are concerned about what a nine star flag means in place of the standard 50 stars and 13 stripes on the American flag.

"I also direct that, for the same length of time, the representatives of the United States in foreign countries shall make similar arrangements for the display of the flag at half‑staff over their ...

There are specific holidays and events when flags are flown at half-staff in the United States. The Arizona state website outlines those days as: Memorial Day, when the flag should be displayed ...