Human-caused hazards Information on what to do in human-caused hazards in Philadelphia. Active shooter Information on what to do if there's an active shooter event in Philadelphia. Carbon monoxide poisoning Information on what to do if you suspect carbon monoxide poisoning, and some carbon monoxide safety tips. Hazardous materials Information on what to do if there's a hazardous materials incident in Philadelphia. Explosion Information on how to respond if there's an explosion in Philadelphia. Fire Information on how to prepare for a fire before it starts. Infectious disease Information on what to do if any disease or biological emergencies occur in Philadelphia. Nuclear or radiation incident Information on what to do if there's a nuclear or radiation incident in Philadelphia. Terrorism Information about how Philadelphia prepares for and prevents acts of terrorism. Lead exposure Information for renters and landlords about lead safety.