United’s operations control center is in Denver. If I were the CEO and the airline is melting down that is the place I would want to be. I have not been in UAL’s OCC but have spent time in another running an airline of similar size. The amount of information available in the OCC can’t be duplicated remotely. United was very close to needing to perform a complete shut down and reset. That’s a CEO call and requires every bit of info available.