0:08
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Police siren rings and ends.
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0:21
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Police siren wails and fades. Distant perspective, city streets.
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0:20
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Police siren wails and fades. Distant perspective.
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0:25
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Police siren warbles and wails
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0:18
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Police siren warbles and wails.
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0:08
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Crowd chants "Yes we can" at political rally for presidential candidate Barack Obama.
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0:01
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Two quick police sirens.
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1:24
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"Medium-pitch constant tone, medium rate."
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1:27
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"Medium-pitch constant tone, low rate (6)."
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1:29
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"Distorted medium-pitch constant tone, low rate."
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1:29
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"Medium-pitch constant tone, low rate (5)."
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2:11
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"Medium-pitch constant tone, low rate (4)."
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1:41
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"Medium-pitch constant tone, low rate (3)."
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1:56
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"Medium-pitch constant tone, low rate (2)."
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1:43
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"Medium-pitch constant tone, low rate (1)."
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1:14
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"Medium-pitch constant tone, high rate."
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1:22
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"Distorted medium-pitch constant tone, high rate."
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0:43
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"Medium-pitch constant tone, high rate (3)."
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1:05
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"Medium-pitch constant tone, high rate (2)."
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1:34
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"Medium-pitch constant tone, high rate (1)."
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