Ok, so as the chief or captain, you would send out the text to all the firefighters? Or should the app look for the text from the CAD system? Can you post/send me one of the CAD texts? Is there something in the text that can uniquely identify it?
Next, the app should allow you to select a set of phone numbers to SMS a response back to or just to the chief/captain (should all captains and the chief get the responses all the time)? Is that list the same all the time? Does it change based on day/date/time of day?