Palm Bay residents Shirley and Thomas Moore said they were shocked to see the flag upside-down outside of a neighbor's home during the Veteran's Day weekend, Florida Today reported Wednesday.
"We served for the right of people to express themselves," said Thomas Moore, 62, a Navy veteran.
Moore said he disagreed with the gesture.
"It is a disrespect to the flag," he said.
Florida Today said the residents of the home did not respond to calls for comment, but a notice posted on the door explains the inverted flag is a sign of distress.
"As a result of the many traitors and enemies we as a free people have, both foreign and domestic, as a result of unconstitutional acts, legislation and atrocities passed and/or committed against the US citizens and their life, liberty and property, and as a result of policies that have allowed (and continues to allow) enemies of this nation to enter in large numbers through porous border policy, I believe the life, liberty and property of U.S. citizens are in dire danger and distress," the sign read.