MPC - Emergency phase
A main terminal can only be attacked if no command relay is connected to it or the terminal is not in emergency phase. When the structural integrity of the terminal drops below 50% it switches to emergency phase for three days. The end of this phase is on the third day at the hour predefined by the owner. Default is 20:00 Nia local time. This offset can only be set when the terminal is not in emergency phase.
During the emergency phase the terminal can be repaired and otherwise fully functional. After the emergency phase the terminal cannot switch again to emergency for two hours. This is the time when the owner must do everything to protect it. You can scan the emergency phase end with Intrusion scanner ammo. Main terminals, facility nodes and reactors can switch to emergency mode.