What does it signify when a flag is positioned at half-staff?

When a flag is positioned at half-staff, it signifies a sign of mourning. This action is performed to honor and remember those who have died or to acknowledge national tragedies. The practice serves as a powerful visual expression of respect and sorrow, reflecting the gravity of the loss being acknowledged. Typically, this custom is observed during memorials for significant figures, such as former presidents or military personnel who have passed away, and on designated national days of remembrance.

The other options do not accurately represent the meaning associated with a flag at half-staff. Celebrations or honorary recognitions typically would not involve lowering a flag, while military drills may have their own protocols regarding flag positioning that do not correlate with the sentiment of mourning.