As has been pointed RoC is NOT DRC. I never flew but I spent some time there 6 years back. Brazzaville is much safer and much quieter than their neighbors across the river. The big man in charge has been in power for a very, very long time. For better or worse, the country has been mostly stable as long as it's been on my radar - aside from isolated events, generally surrounding elections, here and there.
The people are friendly and the beer is cheap 😎