Hold activity under the 30-30 lightning rule

Reinforce NFHS / NATA lightning order from event-operations training. Play is not restarted 5 minutes after the last flash.

1. Suspend activity when thunder is heard or lightning is seen.
2. Move everyone to a substantial building or a hard-topped vehicle.
3. Stay off dugouts, tents, and tall trees.
4. Wait 30 minutes after the last thunder or flash.
5. Restart the 30-minute clock with each new thunder or flash.
6. Do not resume because the sky “looks lighter” over the field.