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Standard bell at Maury Hall
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Standard horn with double projector
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Wheelock strobe at Rosslyn Center
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Thunderbolt siren on Waterloo Road [09]
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Thunderbolt siren on Waterloo Road [08]
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Thunderbolt siren on Waterloo Road [07]
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Thunderbolt siren on Waterloo Road [04]
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Thunderbolt siren in Jessup Park [10]
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Thunderbolt siren in Jessup Park [09]
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Thunderbolt siren on Waterloo Road [17]
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Thunderbolt siren on Waterloo Road [06]
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Thunderbolt siren in Jessup Park [14]
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Thunderbolt siren in Jessup Park [13]
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Thunderbolt siren in Jessup Park [12]
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Thunderbolt siren on Waterloo Road [14]
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Thunderbolt siren on Waterloo Road [03]
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Thunderbolt siren on Waterloo Road [02]
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Thunderbolt siren on Waterloo Road [05]
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Thunderbolt siren in Jessup Park [11]
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Thunderbolt siren on Waterloo Road [13]
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Thunderbolt siren on Waterloo Road [01]
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Thunderbolt siren on Waterloo Road [16]
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Thunderbolt siren on Waterloo Road [15]
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Thunderbolt siren on Waterloo Road [12]
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Thunderbolt siren on Waterloo Road [11]
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Thunderbolt siren on Waterloo Road [10]
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Traffic light gantry at Fairfax County Parkway and Sunrise Valley Drive [01]
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Traffic light gantry at Fairfax County Parkway and Sunrise Valley Drive [02]
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Traffic light gantry at Fairfax County Parkway and Sunrise Valley Drive [03]
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Traffic light gantry at Fairfax County Parkway and Sunrise Valley Drive [04]
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Traffic light gantry at Fairfax County Parkway and Sunrise Valley Drive [05]
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Traffic light gantry at Fairfax County Parkway and Sunrise Valley Drive [06]
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Siren selfie
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Pedestrian call button at West Lawrence Avenue and North Oakley Avenue [01]
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Traffic signal at West Lawrence Avenue and North Oakley Avenue [01]
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Traffic signal at West Lawrence Avenue and North Oakley Avenue [02]
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Traffic signal at West Lawrence Avenue and North Oakley Avenue [03]
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Pedestrian call button at West Lawrence Avenue and North Oakley Avenue [02]
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Starbucks on North Lincoln Avenue [01]
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Starbucks on North Lincoln Avenue [03]
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Starbucks on North Lincoln Avenue [02]
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View west from Roosevelt platform
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View east from Roosevelt platform
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CTA signal A59 at Jackson station [01]
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CTA signal A59 at Jackson station [02]
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Thunderbolt siren at North Milwaukee Avenue and Golf Road [01]
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Thunderbolt siren at North Milwaukee Avenue and Golf Road [02]
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Thunderbolt siren at North Milwaukee Avenue and Golf Road [03]
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Fire alarm at Sherman Garden Apartments [01]
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Fire alarm horn/strobe at the Hampton Inn in Independence, Ohio
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Signal X-238 at East 55th Street station
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Route selector box at East 55th Street station