TexasCHLforum.com

Most larger cities have a PSAP, Public Safety Answering Point, that you connect to when dialing 911. They ask "what is the nature of your emergency," verify your location and callback number on E911, then transfer you to the appropriate resource (Fire, PD, EMS). Most likely a reported shooting will be sent to PD and their call takers will obtain the rest of the pertinent info (number of victims, location of the shooter, confirm address, etc) and then send the call info over to EMS and Fire. In smaller communities, there is usually a single call center with one or two call takers/dispatchers in the same room, so they will send the appropriate resources. Bottom line, just call 911 and report what has occurred, don't sweat who you think you need to talk to or who they should send.