The city of Philadelphia has released a 175-page audit it commissioned about its emergency preparedness, noting deficiencies in many areas, including communications. The report noted that CAD is being upgraded for police and fire, and the 911 center is being upgraded. But it warned there is no communications in the underground transit tunnels, and that fire and police communication operations are separate. The report recommended that ambulances be equipped with radios to contact hospitals, and integrate city communications with surrounding counties. Download (pdf, 4.1 Mb) the report here:
http://www.phila.gov/pdfs/EPRC_Final_Report.pdf
http://www.phila.gov/pdfs/EPRC_Final_Report.pdf