Suggested: 4k Image, Nature, Lifestyle
security-signal emergency-response danger-warning
emergency-flashing danger-warning light-signal
alert-siren flashing-light-signal safety-siren
traffic-siren rescue-signal flashing-light-signal
urgent-warning flashing-light-signal emergency-detection
emergency-warning police-alert danger-alert
danger-alert red-alert alert-siren
police-alert danger-alert red-alert