Many large software and hardware vendors have something like this, sometimes multiple variants - a “fly and fix” team to do onsite troubleshooting or a critical

Many large software and hardware vendors have something like this, sometimes multiple variants - a “fly and fix” team to do onsite troubleshooting or a critical customer program which usually provides project-management oversight to get different teams involved to help get complex problems fixed (but which might also have an explicit or just de facto ability to compel teams to prioritize certain fixes.)