"The purpose of this manual is the prevention of injury, suffering, or death that may occur as a result of poor planning or preventable incidents at public events. This manual is intended to provide guidance for the management of risks associated with conducting events that involve mass gatherings of people and assist planners and organizers in making such events safe and successful. Details of the development of the manual and other related matters are noted in the Background section of the Introduction. The manual was sponsored, edited, and published by the Department of Homeland Security (DHS)/Federal Emergency Management Agency (FEMA). FEMA has prepared this manual for use by anyone planning or conducting a special event or mass gathering. This manual is intended to enable its users to ensure that adequate measures and systems are in place to prevent, reduce, and provide care for injuries, illness, and suffering that may occur."
FEMA Independent Study Program: http://training.fema.gov/EMIWeb/IS/