How should a red hand held flare used as a distress signal?

A red hand-held flare should be ignited in an open area away from flammable materials and held at arm's length to signal for help. It should be pointed away from your body and aimed towards the direction from which help is expected. The flare should be waved back and forth to maximize visibility, and it should be used during low-light conditions for optimal effect. After use, ensure the flare is disposed of safely according to local regulations.