If any of the HD displays in the control room should fail, the system will work around the bad screen and offer controllers the best view possible on the remaining 13. Replacing a dead screen takes just 10 minutes. Should a camera fail, backups will jump into action to fill the gap. And of course, if the entire digital display system should fail, controllers still have radios and radar to fall back on, much like they do now when London's nearly impenetrable fog covers the airport. The new LCY ATC facility is scheduled to open in January 2020.