I keep reading about how hams need to be careful what they break in on and also that they don't talk TOO long in case someone needs to use the frequency for an emergency. What emergencies are people talking about? On this page the author talks about someone needing to report a car accident. But, wouldn't you report that to 911? Why would you jump on your radio and call that out? Do police listen to all ham frequencies or something or is he talking about if the person had no cell phone?