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Fire alarm horn/strobe at 5000 Sunnyside Avenue [01]
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Fire alarm horn/strobe at 5000 Sunnyside Avenue [02]
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Tunnel under Roanoke-Blacksburg Regional Airport [01]
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Tunnel under Roanoke-Blacksburg Regional Airport [02]
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Tunnel under Roanoke-Blacksburg Regional Airport [03]
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Tunnel under Roanoke-Blacksburg Regional Airport [04]
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Photographing the tunnel under Roanoke-Blacksburg Regional Airport