This is a category of codes used by the United Nations Space Command.
“Hydra was a UNSC general Emergency code. It was almost never used due to its content. The Hydra...Hydra (code)
“Military Standard Time (also called MST) is the official name of the UNSC's 2400 hour...Military Standard Time
“Bandersnatch was a UNSC emergency code. Used right after combat operations or disasters had...Bandersnatch
“Code Omega Three was a UNSC emergency code. This code, to be used during combat operations...Omega Three
“Bloody Arrow is a UNSC emergency code signifying the complete rout and decisive defeat of...Bloody Arrow