signal of dire distress http://www.usaflagsupply.com/upside-down-flag/ the U.S. a distress signal http://www.usaflagsupply.com/upside-down-flag http://www.usaflagsupply.com/upside-down-flag officially recognized sign of distress U.S. Flag Code the U.S. displayed an upside-down American flag. Flag Code