Are the symbols available as ESRI markers?
Yes. Jim Mossman of Digital Deja View has developed a nice set of ESRI markers and documentation for installation and use. They can be downloaded from the ESRI Arcscripts site at: http://arcscripts.esri.com by searching on “emergency response symbol.” Please note that the Symbol Subgroup was not involved in the development of these markers, and provides no support for them.