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Wheelock 7002T at the American Legion in Silver Spring
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Remote annunciator at the American Legion in Silver Spring
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Simplex pull station at an apartment building
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Fire alarm strobe mounted through a glass window
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Fire alarms at Dick's Sporting Goods
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Fire alarm strobe at Martin's in Culpeper, Virginia [01]
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Fire alarm strobe at Martin's in Culpeper, Virginia [02]
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SpectrAlert Advance horn/strobe at Big Lots
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Fire alarm pull station at Wawa in Glen Burnie
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Metro Center station entrance pylon
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Pedestrian bridge over railroad tracks [01]
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Pedestrian bridge over railroad tracks [02]
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Pedestrian bridge over railroad tracks [03]
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Pedestrian bridge over railroad tracks [04]
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Pedestrian bridge over railroad tracks [05]
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Pedestrian bridge over railroad tracks [06]
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Peace sign on a bridge pier
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Washington Metro bridge over Paint Branch Trail
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Green Line train crosses bridge over Paint Branch Trail
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Box culvert under CSX tracks
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Eastbound Capitol Limited at Harpers Ferry [01]
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Eastbound Capitol Limited at Harpers Ferry [02]
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Winchester and Potomac Railroad Bridge [01]
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Winchester and Potomac Railroad Bridge [02]
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Winchester and Potomac Railroad Bridge [03]
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Freight train on CSX Shenandoah Subdivision
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View from Maryland Heights overlook [01]
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View from Maryland Heights overlook [02]
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View from Maryland Heights overlook [03]
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Confluence of Potomac and Shenandoah Rivers
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View from Maryland Heights overlook [04]
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View from Maryland Heights overlook [05]
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Abandoned bridge piers and CSX Shenandoah Subdivision bridge
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Winchester and Potomac Railroad Bridge [04]
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Abandoned bridge piers at Harpers Ferry [04]
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CSX trailers
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ADT pull station at White Marsh Mall
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Roosevelt Bridge
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490 L'Enfant Plaza pull station
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Simplex TrueAlert at Mars Supermarket
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Lathem LTR4-128 behind Edwards cover
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Halon pull station at P. Buckley Moss Museum
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M/V Roanoke and M/V Floyd J. Lupton [02]
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M/V Floyd J. Lupton approaching Hatteras Village [01]
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M/V Floyd J. Lupton approaching Hatteras Village [02]
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Hatteras Village
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Coast Guard station at Hatteras
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M/V Floyd J. Lupton approaching Hatteras ferry terminal [03]
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M/V Floyd J. Lupton approaching Hatteras ferry terminal [04]
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M/V Floyd J. Lupton docking at Hatteras
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Hatteras ferry terminal [01]
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Hatteras ferry terminal [02]
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Hatteras ferry terminal [03]
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Hatteras ferry terminal [04]
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Simplex pull station in Charles Town, West Virginia
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Abandoned rowhouse at North Calvert and East Read Streets [01]
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Abandoned rowhouse at North Calvert and East Read Streets [02]
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Abandoned rowhouse at North Calvert and East Read Streets [03]
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Runway at College Park Airport [01]
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Runway at College Park Airport [02]
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Paint Branch Trail [01]
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Paint Branch Trail [02]
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Paint Branch Trail [03]
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Stream in the Lake Artemesia Natural Area
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White Crown Victoria
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Fire alarm at Martin's in Waynesboro
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Fire alarm pull station at New Street parking garage [01]
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CSX Shenandoah Subdivision bridge
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Freight train on CSX Cumberland Subdivision track
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Harpers Ferry tunnel portal
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Freight train at Martinsburg [01]
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Freight train at Martinsburg [02]
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Freight train at Martinsburg [03]
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Fire alarm speaker at Maryland House
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Public address speakers and fire alarm strobes at Greensboro station
Plaza in front of the Augusta County Courthouse
Pedestrian walkway on CSX Cumberland Subdivision bridge
Intersection of Shenandoah and Potomac Streets in Harpers Ferry
Waiting room at Harpers Ferry train station
Railroad tracks through Harpers Ferry