- Fire alarm at United States Botanic Garden [02]
- Fire alarm at United States Botanic Garden [01]
- Fire alarm at United States Botanic Garden [03]
- Simplex fire alarm speaker/strobe
- Wheelock fire alarm speaker/strobe in Ballston pedestrian bridge
- Speaker at Jubilee USA Network demonstration
- Installation of new PA system at Pentagon City
- New public address speaker at Pentagon City [01]
- New public address speaker at Pentagon City [02]
- World Can't Wait demonstration [02]
- October Rebellion [02]
- October Rebellion [29]
- October Rebellion [30]
- Resist the Greenscare march [04]
- Resist the Greenscare march [07]
- Resist the Greenscare march [06]
- Resist the Greenscare march [05]
- Fire alarm speaker/strobe at John Hancock Center
- Over 9000 Anon March [15]
- Over 9000 Anon March [14]
- Anonymous DC August raid [10]
- Anonymous DC August raid [09]
- Anonymous DC August raid [08]
- World Bank/IMF demonstration [01]
- World Bank/IMF demonstration [08]
- World Bank/IMF demonstration [11]
- World Bank/IMF demonstration [04]
- World Bank/IMF demonstration [03]
- World Bank/IMF demonstration [02]
- Graffiti on wall speaker
- Wheelock speaker strobe at Museum of Science and Industry
- Anti-War Anniversary March [04]
- Anti-War Anniversary March [03]
- Anti-War Anniversary March [01]
- Anti-War Anniversary March [19]
- Bradley Manning rally [06]
- Bradley Manning rally [07]
- Bradley Manning rally [08]
- Woman speaking at Stop the Machine demonstration
- Fire alarm at Whole Foods Market in Arlington, Virginia
- Fire alarm speaker/strobe at Navy Pier
- Wheelock ET speaker/strobe at Olney Indoor Swim Center
- Arundel Mills service corridor
- Fire alarm speaker at Maryland House
- Public address speakers and fire alarm strobes at Greensboro station
- Wheelock speaker/strobe at Cathedral of Learning [01]
- Wheelock speaker/strobe at Cathedral of Learning [02]
- Wheelock speaker/strobe at Federal Plaza
- Fire alarm at Wheaton Plaza
- Fire alarm at West Falls Church station [01]
- Fire alarm at West Falls Church station [02]
- Fire alarm speaker/strobe at Hotel 24 South [01]
- Fire alarm speaker/strobe at Hotel 24 South [02]
- Fire alarm speaker/strobe at Hotel 24 South [03]
- Federal Signal Modulator in Atlantic City [01]
- Federal Signal Modulator in Atlantic City [02]
- Federal Signal Modulator in Atlantic City [03]
- Federal Signal Modulator in Atlantic City [04]
- Flood warning system in downtown Ellicott City [02]
- Flood warning system in downtown Ellicott City [03]
- Flood warning system in downtown Ellicott City [01]
- Handwritten sign on a speaker
- Siren at 1300 West Broad Street [01]
- "Please do not disconnect. Speaker is part of fire system. Thank you."
- Simplex fire alarm speaker/strobe at D-Hall [01]
- Simplex fire alarm speaker/strobe at D-Hall [02]
- Simplex fire alarm speaker/strobe at D-Hall [03]
- Simplex speaker/strobe in Gabbin Hall [01]
- Simplex speaker/strobe in Gabbin Hall [02]
- Simplex speaker/strobe in Gabbin Hall [03]
- Wheelock speaker and strobe at the National Aquarium
- Wheelock fire alarm speaker at Sears in Frederick, Maryland [01]
- Wheelock fire alarm speaker at Sears in Frederick, Maryland [02]
- Fire alarm at Knoxville Station Transit Center [03]
- Fire alarm at the Sunsphere [02]
- Fire alarm at the Sunsphere [01]
- Fire alarm and speaker at Ashburn station
- Signage for trains towards Largo at Ashburn station [02]
- Fire alarm and speaker at Reston Town Center station
- Signage for trains towards Largo at Ashburn station [01]