An alarm.
A state of readiness for potential combat.
A notification of higher importance than an advisory.
Attentive; awake; on guard.
To give warning to.
The sound or other warning made by a fire alarm.
An electromechanical or electronic bell, klaxon, chime, horn, speaker, strobe light or other device which warns people in a building of a possible fire or other condition requiring evacuation.
An emergency response to a fire by the fire department with manpower and equipment.