- Platform at Martinsburg train station [01]
- Platform at Martinsburg train station [02]
- Ellenco 5C at Hewitt Gardens [03]
- Metro Center station [07]
- Ceiling at Metro Center
- Metro Center station [08]
- Interstate 83 Business Loop shield [03]
- Interstate 83 Business Loop shield [02]
- Interstate 83 Business Loop shield [04]
- Interstate 83 Business Loop shield [01]
- Tanker cars in Cumberland rail yard
- Freight train departing CSX rail yard
- CSX 3277 in Cumberland yard [02]
- CSX 3277 in Cumberland yard [01]
- SpectrAlert Advance horn/strobe [01]
- SpectrAlert Advance horn/strobe [02]
- Abandoned payphone sign
- Wheelock fire alarm bell
- Vintage Acme pull station [02]
- Vintage Acme pull station [01]
- Old and new fire alarms [02]
- Mirtone fire alarm pull station
- Edwards fire alarm pull station [01]
- Old and new fire alarms [01]
- Old and new pull stations
- Old and new fire alarms [03]
- Edwards fire alarm pull station [02]
- Old and new fire alarms [04]
- Wheelock Exceder at The Flats at Shady Grove
- M/V Floyd J. Lupton [02]
- View from M/V Roanoke
- SpectrAlert Advance with pull station
- M/V Floyd J. Lupton [01]
- Navigational beacon on Hatteras-Ocracoke ferry route [02]
- M/V Hatteras [02]
- Navigational buoy on Hatteras-Ocracoke ferry route [02]
- M/V Floyd J. Lupton [04]
- Navigational buoy on Hatteras-Ocracoke ferry route [01]
- M/V Floyd J. Lupton [03]
- M/V Croatoan [04]
- M/V Croatoan [03]
- M/V Croatoan [02]
- M/V Croatoan [01]
- M/V Frisco [05]
- Sea gull flying over Hatteras Inlet
- M/V Frisco [03]
- M/V Frisco [04]
- M/V Frisco [01]
- M/V Frisco [02]
- Navigational beacon on Hatteras-Ocracoke ferry route [01]
- M/V Hatteras [01]
- Superstructure of the M/V Roanoke
- Simplex pull station at Martinsburg train station
- CSX freight train at Martinsburg
- SpectrAlert classic horn/strobe [01]
- SpectrAlert classic horn/strobe [02]
- System Sensor L-Series horn/strobe [03]
- System Sensor L-Series horn/strobe [04]
- System Sensor L-Series horn/strobe [01]
- System Sensor L-Series horn/strobe [02]
- Fire alarm at Montgomery College [02]
- Fire alarm at Montgomery College [03]
- Fire alarm at Montgomery College [01]
- Fire alarm at Montgomery College [04]
- White's Ferry alarm switch
- Fire alarm at Dorsey MARC station
- Fire alarm pull station at Citizens Building [03]
- Fire alarm pull station at Citizens Building [01]
- Fire alarm pull station at Citizens Building [02]
- Fire alarm horn/strobe at Citizens Building
- Fire alarm in Armstrong Hall [02]
- Fire alarm in Armstrong Hall [01]
- Sign assembly in Marathon, New York [03]
- Sign assembly in Marathon, New York [02]
- Sign assembly in Marathon, New York [01]
- Logico2 carbon dioxide alarm
- Composting toilet at a rest area
- Fire alarm bell and strobe at Geisinger Community Medical Center
- Fire alarm chime and strobe at Geisinger Community Medical Center
- Fire alarm pull station at Geisinger Community Medical Center [01]