An emergency siren sound like those from outside a base during a zombie apocalypse. Based off of <a href="https://freesound.org/people/lluiset7/sounds/367442/" rel="nofollow">https://freesound.org/people/lluiset7/sounds/367442/</a> Siren sound, trimmed and looped cleanly, ready for game use. Original owner has not specified attribution, so nor will I. This sound may not be used commercially, and you must reference me and lluiset7 to use it.