On the second night, the patrol was alerter and caught the intruder quickly.

The park ranger acted as an alerter, warning hikers of the approaching storm.

Despite their training, the firefighters experienced fluctuating alertnesses during the long night of rescues.

The park ranger remained on alert after the recent sightings of wolves.

After the neighborhood had experienced a series of break-ins, she stayed on the alert every night.

Make sure the worker thread is alertable so it can handle notifications from other threads.

During the emergency drill, the alerters failed to notify several floors, prompting an immediate investigation.

After the storm, several amber alerts were mistakenly sent to residents across the region, creating confusion.

The monitoring system issued two spew alerts after the sudden eruption, prompting nearby residents to evacuate.

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