Morris Day’s Mirror

Engineer here. No one upgrades critical infrastructure-level equipment mid-day during operational hours. Swapping out "copper wires" with fiber, done properly, would not take down communication. Both should have been running in parallel, tested, before decommissioning the old connections. FAA also has multiple redundant backup systems in place that include overlapping radars and communication channels that should have kicked in when the primary system went down. That did not happen. The incompetence is truly extraordinary.