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Icy fire alarm strobe
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Emergency door release on WMATA railcar 3049
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Handwritten sign on a speaker
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"Please do not disconnect. Speaker is part of fire system. Thank you."
!["Please do not disconnect. Speaker is part of fire system. Thank you."](../../../../../i/upload/2024/07/19/20240719213055-fff3e071-cu_s9999x250.jpg "\"Please do not disconnect. Speaker is part of fire system. Thank you.\" (2079 visits) Sign reading, "Please do not disconnect. Speaker is part of fire system. Thank you," at ...")