Alert Procedure

Code Green
The normal operating procedure. There is no threat to the ship, nor crew.

Code Blue
Elevated alert status. Ongoing, known, or suspected security threat to vessel or crew, or another security emergency.

Code Red
Emergency alert status. There are multiple major emergency situations ongoing, or a severe security emergency.

Code Violet
Elevated alert status. There is a serious viral outbreak, many personnel are injured or dead, or another major medical emergency.

Code Yellow
Elevated alert status. The ship has suffered severe damage, the supermatter is delaminating/has delaminated/is ejected, the singularity is loose, there is a major fire, an incoming meteor storm, or another major engineering emergency.

Code Delta
Maximum alert status. Station self destruct activated or destruction imminent. Evacuation procedures strongly advised. All crew and passengers must be evacuated.

Code Epsilon
Your contract within the station is terminated by CentCom. Usually get's triggered with arrival of the Death Squad or some sort of "Cleanup" Emergency Response Team. (Alarm is triggered by game administration manually)