When is it appropriate to lower the flag to half-staff?

Lowering the flag to half-staff is a recognized custom in flag etiquette that serves as a sign of respect or mourning. It is primarily done to honor the memory of a notable deceased individual, particularly in the context of national figures, military personnel, or public servants who have made significant contributions. This practice communicates grief or solemnity and is often accompanied by a proclamation or directive when it pertains to public figures, ensuring that the act carries a symbolic weight.

The other options do not align with the established customs regarding flag protocol. For example, while lowering the flag is a gesture of distress, it is not appropriate to use the half-staff position for that purpose; instead, other methods of signaling may be employed. National emergencies might call for different forms of flag display, and a worn or tattered flag should be properly retired, not displayed in any position, including half-staff. Thus, honoring notable deceased individuals is the correct context for this action.