My friend donated the flag that draped his father's casket to his church to be displayed in their family life center. That was over 20 years ago. It is now faded and has an antique look. The church is replacing the flag since it's old. My friend would like to have the flag back IF and ONLY IF it is within proper flag etiquette and respectful to keep an old worn flag. Is it within proper etiquette for him to keep it or should it be destroyed according to code? Could he display it in some fashion, even if it's in a case indoors?