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Fire alarm pull station in Crystal City Underground [01]
![Fire alarm pull station in Crystal City Underground [01]](../../../i/upload/2024/07/16/20240716002053-6b49639a-cu_s9999x250.jpg "Fire alarm pull station in Crystal City Underground [01] (3858 visits) Siemens fire alarm pull station in the Crystal City Underground, in the Crystal City neighborhood of...")
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Fire alarm pull station in Crystal City Underground [02]
![Fire alarm pull station in Crystal City Underground [02]](../../../i/upload/2024/07/16/20240716002054-6cfcb5f6-cu_s9999x250.jpg "Fire alarm pull station in Crystal City Underground [02] (3591 visits) Siemens fire alarm pull station in the Crystal City Underground, in the Crystal City neighborhood of...")
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Fire alarm pull station at the National Museum of American History
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Activated fire alarm pull station at MBTA Chinatown station
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Acela Express door mode switch
![Acela Express door mode switch](../../../i/upload/2024/07/16/20240716231527-66913270-cu_s9999x250.jpg "Acela Express door mode switch (3557 visits) Door mode switch on Acela Express trains. The switch is set in the "open" position.
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