Hazmat
Nuclear
Chemical Spill
Suspicious package/device
Toxic
National laboratory
Nuclear facility
Nuclear threat
Cloud
Plume
Radiation
Radioactive
Leak
Biological infection (or event)
Chemical
Chemical burn
Biological
Epidemic
Hazardous
Hazardous material incident
Industrial spill
Infection
Powder (white)
Gas
Spillover
Anthrax
Blister agent
Exposure
Burn
Nerve agent
Ricin
Sarin
North Korea
