Source: The Washington Post - Link
President Biden initially ordered flags on Saturday to be flown at half-staff. Then he ordered them back up at full-staff.
It’s because of a quirk that comes up every half dozen years or so, when a day that honors two groups collides — with two different protocols for the American flag. For Peace Officers Memorial Day, which falls on May 15, flags are supposed to be at half-staff. But the third Saturday in May is marked to honor Armed Forces Day — and on that day, flags are supposed to be full-staff.
Of course the GOP made hay of this. The egg barely touched their faces though. Sigh.