Air raid sirens

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Air raid sirens a top a utility pole in San Francisco California

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Size: 5120px × 3413px
Photo credit: © Jim Goldstein / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: air, alarm, alert, america, amplification, amplify, annoying, california, civil, coast, cone, cycle, decibel, defense, emergency, francisco, frequency, high, loud, noise, noisy, north, perspective, pole, post, powered, raid, san, security, siren, sound, states, sunset, system, united, upward, usa, utility, view, wave