The real panic began when the infection started to affect Spartans. ONI was scrambling to figure out what the hell was happening, while at the same time, dealing with the threat on Reach. This is where things get interesting. Records regarding spartan team operations were scrambled to hell after the war, but I managed to put some pieces together. Since the Spartans were super humans, and the human immune system was never exposed to such a virus, the affects and symptoms were amplified tenfold, and even causing small mutations. The scary part was that they could hide the mental symptoms. From what I understand, your team was exposed to this thing somewhere, somehow. There was mention of a team Cryptic, that was described as 'At Risk' of infection. During the op you were on, despite them fighting their hardest to stop the virus, they snapped. They went after anything that moved, friend or foe, even the local wildlife. They all went beserker, and eventually attacked you. After that, a couple marines, some grunts, an elite, and finally each other. All were dead, except you, who remained unchanged by the virus. That's where the files became unreadable. [spoiler]Aaaaaaannnnnd writers block. [/spoiler]