Since Detroit is considered a Senior Michigan City (founded in 1701), perhaps A2 should consider ShotSpotter to detect gunfire within the city limits?
https://www.detroitnews.com/story/news/local/detroit-city/2022/10/11/detroit-city-council-oks-shotspotter-7-million-expansion/69552267007/
A fortune teller can also be consulted to see where shots are predicted. @https://www.youtube.com/watch?v=-ZwLG7yJg1g
There is often a lot of noise as the mayor and luxury developers demolish the city and rebuild luxury units for the wealthy and tax the current citizens for the needed infrastructure upgrades
Well, there are sometimes loud noises which are not shots. For example, a car backfiring or the loud booms coming from Mayor Chris "Taco Tuesday" Taylor's office after lunch.