It is difficult to get specific answers on the Internet. If you have the conditions, you can go to the unit to get to know it on the spot and talk to people around the unit, such as shopkeepers, doormen and security guards. Maybe you can learn something, and it is best to know the employees of the unit. This information is more objective and true. Said a little bit about his stupid experience and opinion. After all, I'm not in your environment, so it's hard to avoid thinking wrong and saying wrong.