indoor flights in redzone

Hey everyone — I've been shooting a lot of indoor manufacturing content lately and running into drift issues with my drone. I understand GPS is unavailable indoors and the vision positioning system has real limitations, so I'm not chasing a hardware fix — I'm looking for operational strategies...

I tried to fly a phantom 4 at local outdoor event and discovered it was blocked due to the location being deemed a red zone due to the local missile defense field. Months later, when I heard the local kids flying club was going to fly their quads at the same location, I was puzzled, so I...